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Brock B21 Matt Black Polished
18 Inch Set of 4 alloy wheels
Add precision and elegance to your car with the 18" Brock B21 in Matt Black Polished. Manufactured in Germany, this wheel is designed to deliver reliable performance and standout visual appeal with a flawless, factory-quality finish.
Whether you're upgrading your daily vehicle or enhancing a premium model, the B21 in Matt Black Polished offers the confidence of engineered quality and timeless design.
- Crafted in Germany with exacting standards
- Durable, corrosion-resistant Matt Black Polished finish
- TÜV approved for safety, strength, and road performance
- Lightweight design supports better ride quality and handling
- Suitable for a wide variety of vehicle types and driving conditions
The B21 is a smart upgrade that combines German manufacturing expertise with refined, everyday usability and long-term style.
If you have any questions at all, please call our expert team for Free from your Mobile on 0333 800 8000 or Free from your Landline on 0800 130 3400. Our lines are open 9am to 6pm (Monday to Friday) and 9am to 4pm (Saturday).
Add precision and elegance to your car with the 18" Brock B21 in Matt Black Polished. Manufactured in Germany, this wheel is designed to deliver reliable performance and standout visual appeal with a flawless, factory-quality finish.
Whether you're upgrading your daily vehicle or enhancing a premium model, the B21 in Matt Black Polished offers the confidence of engineered quality and timeless design.
- Crafted in Germany with exacting standards
- Durable, corrosion-resistant Matt Black Polished finish
- TÜV approved for safety, strength, and road performance
- Lightweight design supports better ride quality and handling
- Suitable for a wide variety of vehicle types and driving conditions
The B21 is a smart upgrade that combines German manufacturing expertise with refined, everyday usability and long-term style.
If you have any questions at all, please call our expert team on 0800 130 3400 Free from your Landline or Mobile. Our lines are open 9am to 6pm (Monday to Friday) and 9am to 4pm (Saturday).
| Brand: | Brock | |
| Model: | B21 | |
| Width: | {[{ wheelWidth }]} | |
| Diameter: | 18 Inch | |
| Bolt Pattern: | Best Fit Supplied | |
| Offset: | Best Fit Supplied | |
| Colour: | Matt Black Polished | |
| Style: | 10 Spoke |
Find Your Tyre Package
Alloy Wheels Only
Set of 4 x 18" Brock B21 Matt Black Polished & Fitting Kit
All sets of wheels include four 18" Brock B21 Matt Black Polished and a free fitting kit. Every order is fitment checked and supplied with the correct fitting kit. When you receive your wheels, all you need to do is fit your tyres to the wheels then fix them to your vehicle with the fitting kit supplied.
Wheel & Tyre Packages
4 x 18" Brock B21 Matt Black Polished alloy wheels, fitted tyres & fitting kit
All packages include four 18" Brock B21 Matt Black Polished, 4 tyres and a free fitting kit. They are fully fitted and balanced to the highest standards. Every order is fitment checked and supplied with the correct fitting kit. When you receive your package, all you need to do is fix them to your vehicle with the fitting kit supplied.
- All Tyres professionally fitted to the Alloy Wheels
- All Wheels & Tyres are professionally inflated to the correct pressure
- All Wheels & Tyres are fully balanced with the latest balancing equipment
- All Wheels & Tyres are balanced with top quality Trax weights
- All Wheels & Tyres are packaged to the highest standard
- All Wheels & Tyres are fully insured during shipping
Delivery Information
We offer a full international delivery service
We Can Deliver Your Wheels Anywhere in the World
We deliver to all countries around the world using several different couriers to help keep our delivery prices as low as possible for our customers. Our international delivery is an express service, with most orders reaching their destination in a matter of days, making our service the best and most reliable in the country.
With over 20 years of experience supplying alloy wheels and tyres throughout Europe and around the world, you will be assured your order will be shipped securely and as quickly as possible. Our delivery service fully insures your order for peace of mind.
We offer an international delivery service using TNT, DPD, UPS, FedEx and many other world leading delivery companies. You can be assured that your goods will be handled with care.
- Packaged to the highest standard
- All wheels protected front and back
- Tightly shrink-wrapped and easy to open
- Handled with care
- Quality control checked
- Fully insured and trackable
Ordering 18 Inch Brock B21
Quick and easy ways to order your wheels and tyres
Online Checkout Via Credit or Debit Card
You can order online via credit or debit card 24 hours a day, 7 days a week. All online orders are fitment checked and verified before they are sent. We do not charge any surcharges for credit card payments.
Serious about security
Our SSL certificate has extended validation with 128-bit to 256-bit encryption. Your Address bar will display green in most new browsers for peace of mind.
Online Checkout Via PayPal
With our PayPal checkout integration, you can make PayPal payments quickly, easily and more securely - for free. PayPal makes buying from wheelbasealloys.com easy because you don't need to re-enter your debit or credit card details when you buy.
PayPal lets you pay in a few easy clicks. No hassle of getting out your wallet or typing your card details. All you need is your email address for quick, easy payment.
Telephone Via Credit or Debit Card
Our highly trained sales advisors are here to help. Available 6 days a week they can advise and help you find the wheels and tyres you want. Our dedicated sales team will double-check the alloy wheels are right for your car. Once you are ready to purchase our sales advisors can take all of your details and securely process your order.
Free: 0800 130 3400 Free: 0333 800 8000
International Bank Transfer
Ideal for international payments, if you do not have a credit card or PayPal account. To create a bank transfer, you'll need to submit instructions to your bank. Please contact us for our account information.
Call: 0044 161 628 0000 Email: support@wheelbasealloys.com
14 Day Money Back Guarantee
Money-back guarantee will only be accepted within 14 days of delivery.
Refund will be less the transport costs both ways.
Goods must be in perfect condition.
Refunds only returned to the original credit card used.
Refund Policy
Returns are accepted within 14 days for any unused items. To return the item please contact our customer services. You must return the item in the same condition it was received in. Please ensure that the item(s) are packaged to a suitable standard protecting all surfaces. Providing the purchase is cancelled within 14 days Wheelbase will pay the return postage costs.
Customer services: 0333 800 8000
Frequently Asked Questions
18" Brock B21 Matt Black Polished Alloy Wheels
Wheelbase is the UKs leading alloy wheels and tyre store. Over the years our customers have asked a variety of questions which we have answered below to help you understand a little more about Wheelbase and our alloy wheels and tyres website. If you need any further help or assistance please contact our team.
Our phone lines are open: 9am to 6pm (Monday - Friday) and 9am to 4pm (Saturday).
Have a Question?
Contact Us Via Email
Contact Us
Contacting us couldn't be simpler!
Wheelbase have a dedicated team willing and ready to take your enquiries. Our goal is to respond to you as fast as possible. During our opening times, the fastest way to contact us is via phone. We also have ‘Live Chat’ available, simply click the icon in the top navigation bar to get started. You can also visit our alloy wheels showroom in Manchester. We can deliver your alloy wheels and tyres anywhere in the world, please check our ‘Delivery Information page for further information.
Our phone lines are open: 9am to 6pm (Monday - Friday) and 9am to 4pm (Saturday).
Call Us For Free
Lines Open Now: Call Our Expert Team
Landline Free: 0800 130 3400
Mobile Free: 0333 800 8000
Visit Our Showroom
Wheelbase, Unit 1, Sun Building, Stockfield Road, Chadderton, Oldham OL9 9LU
We have a large showroom near Manchester, packed with all the latest wheels and tyres for your car. The site we operate from is over 2 acres with over 20,000 square feet of showroom, workshop and warehouse. Car parking is not a problem, we have over 40 spaces.
We offer free fitting on all alloy wheels and tyres when you visit our showroom.
You can buy alloy wheels online, or you can visit our showroom, and we'll help you pick the right alloy wheels and tyres for your car. We provide a free fitting service for all our showroom customers. Contact our team and book some time with one of our experts or simply turn up on the day, and we'll be happy to help. We have over 30,000 Alloy Wheels and Tyres under one roof.
Opening Times
Opening times and delivery estimates: Open 6 days a week
* Orders placed before 4pm will be dispatched same day subject to stock availability. If your stock needs to be ordered in, we will notify you via text and email shortly after placing your order with an updated delivery estimate.
Wheelbase Alloys Latest Reviews
Let everyone know how easy it was to buy our alloy wheels
We pride ourselves on excellent customer service and product knowledge, and thankfully our customers agree. If you have recently purchased a set of new alloy wheels from Wheelbase, please leave a review or email us your feedback.
Easy & straightforward to order & set up interest free finance . Good delivery & communication. Would recommend
Andrea Robertson
Written: 19th November 2025
Super quick delivery, items as described. Packaged well. Would highly recommend
Silvester Crash
Written: 19th November 2025
Very happy customer, great service, got exactly what I wanted, good looking, clean, shiny, new wheels with tyres, fitting easy, would highly recommend.
Donna Burrows
Written: 19th November 2025
Outstanding service and so helpful. Wheels fit perfectly. Thanks!
Daniel Lines
Written: 19th November 2025
Great service. Got just what I needed. Aaron was great to deal with. Wonderful customer service.
Barbara Byiers
Written: 19th November 2025
Selection of wheels is great. They were with me quickly and were well packed and immaculate. The load rating for the tyre i wanted wasnt on their website but a quick ask to customer services and they sorted the package out for me. Customer service is up there with the best.
Andrew Birkett
Written: 19th November 2025
Great wheels, look perfect highly recommend.
Zac Dallman
Written: 19th November 2025
I told my mate - a mechanic - how ashamed I was of my original Audi alloys on my old TT coupe. He said look on the Wheelbase web site - they have everything! I did. Great site, fantastic products, and unbeatable prices. I ordered a full set of wheels and tyres. They arrived in two days. Can’t thank you enough! Stuart Toddington November 18 2025
Stuart Toddington
Written: 19th November 2025
Overall excellent and was always kept up to date with all information and Insanely quick delivery. Very impressed
Cameron Graham
Written: 19th November 2025
Good advice, excellent service
Johannes Bruijns
Written: 19th November 2025
Very easy website to use, great staff very helpful and efficient.I would recommend Wheelbase alloys for anyone needing to change their wheels.
Ken Rogers
Written: 19th November 2025
Very easy website to use, great staff very helpful and efficient.I would recommend Wheelbase alloys for anyone needing to change their wheels.
Ken Rogers
Written: 19th November 2025
Excellent service, great wheels would highly recommend
Stephen Vaughn
Written: 19th November 2025
Visited the showroom to see the styles first hand. Dave picked the chosen wheel from store so I could see and handle it. Completed the purchase of set of 4 Declined the locking wheel nuts but day later needed them. They were shipped same day. All now fitted to vehicle and look good Thanks for great service Graham
Graham Barlow
Written: 19th November 2025
Very happy with purchase from Wheelbase. Good communication about the processing of my order, which arrived when they said it would
David Cochrane
Written: 18th November 2025
Very easy transaction, sound advice when ordering and the wheels and tyres turned up quicker than expected
Janson Higgins
Written: 18th November 2025
Over the moon with the wheels they fit amazing 100% recommend
Wayne Colman
Written: 18th November 2025
Goofd all round communication and very helpful
Steve Roberts
Written: 18th November 2025
5 Star Service Very good help and support over the phone and then received 1st drop delivery the very next day!!! Really impressed with Wheelbase!!!
Helen Coxon
Written: 18th November 2025
After a lot of emails back and forth and double checking I received my wheels promptly. They are great looking just like the photo.
Steve
Written: 18th November 2025
Brilliant delivered to France in 4 days. Paid the import tax. Still a lot cheaper than any web sites in France. Would definitely recommend.
Adam Whitehorn
Written: 18th November 2025
Great service !!! really helpful staff & really happy with my purchase !!!👍
Lee Thomas
Written: 18th November 2025
Excellent would definitely use again. Slight delay as wheels had to come directly from the manufacturer but I was kept informed all the way through to delivery. If you want wheels then get them through wheelbase, you won’t be disappointed
Mike Denton
Written: 18th November 2025
Ordered 4 new rims with tyres, delivered within a few days. Well packaged, wheels are great. Thank you for your excellent service. Dan
Dan Penfold
Written: 18th November 2025
Well chuffed with the service. I’d been let down by mytyres for a wheel and tyre package and saw wheelbase online. I saw what I wanted and even though it was a little bit more expensive they offered a 2day delivery. That’ll do me, especially with the reports of snow coming. Order placed early Tuesday morning and they arrived at 4pm on the Friday. Popped them on first thing Saturday. For me the wheels change the look of the car and now sitting on all seasons. Very happy with the service and the ease in which I could pick the desired wheel for my car.
Simon Boyle
Written: 18th November 2025
It is easy to give 5 stars when everything is straight forward. There was a slight hiccup with this order but it was sorted with curtsey, and speed. They care about their customer service. A rare coin these days. Would definitely recommend and will be purchasing again
Guy Goldfinch
Written: 18th November 2025
Had my new alloys fitted on 15/11/25, really pleased with the service they provided, polite & very professional. Thank you Steve.
Steven Sumner
Written: 18th November 2025
Really professional outfit , cannot find anything that was not 100% from initial advice to driving away with Wolfart Munich 3 and Continental Winter Tyres on BMW X1 well worth the drive over from Sheffield.
Paul Hurst
Written: 18th November 2025
Wheels and tyre set look great on my golf and fitted perfectly. Wheelbase had to source my alloy size direct from supplier so took 2 weeks to complete order but communication was excellent. I expect for some customers this would have been good to know at time of ordering and might have impacted their wheel choice. Order was not time critical for me but a potential systems improvement for wheelbase to consider.
Paul Hinxman
Written: 18th November 2025
Quick delivery, top quality alloys Will definitely recommend
Mircea David
Written: 18th November 2025
Top quality wheels, plenty of choice at great prices, very knowledgable staff and all delivered with lightening fast speed. 100% recommended.
Gerry AAA Road Rescue
Written: 18th November 2025
Something went wrong my end on the order but they sent a courier to collect the wrong wheels within a couple of days and sorted it out for me … really good customer support team .. I am really happy with the wheels thank-you…
Martin Brooker
Written: 18th November 2025
very pleased with purchase perfect fit and delivered in 2 days
Geoffrey Lowe
Written: 18th November 2025
Fantastic service, excellent delivery. Would highly recommend
Robert Dent
Written: 18th November 2025
Just bought my second set of wheels from Wheelbase. Once again I found the whole process easy. The website is brilliant and easy to use. The communication was excellent and my wheels and tyres were delivered very promptly in perfect condition. I would highly recommend them.
Alan Hibbert
Written: 16th November 2025
Absolutely first class! New wheels and tyres fitted as promised and look amazing on the car. Was concerned at first that these would fit as larger than standard but after contacting pre-sales I was informed that they would fit, guaranteed. Am very pleased with my purchase and the whole order process was easy from the start. I was kept informed via email at every stage. I would highly recommend Wheelbase to anyone thinking about a new set of wheels and will definitely be back in the future! Thank you so much for all your help and guidance.
Rich Cox
Written: 16th November 2025
Ordered alloys and were delivered on time. Kept me well updated through the process. Quality product too.
Harbs S
Written: 16th November 2025
The wheel I ordered from Wheelbase could not be bettered,I am reluctant to put it on my car because it puts my other wheels to shame.Thank you to all the people at wheelbase for your help and I will not hesitate to tell people about wheelbase.
Brian Pearce
Written: 16th November 2025
Really good, came fast and kept me updated all the way through
Aminoor Rahman
Written: 16th November 2025
Really good, came fast and kept me updated all the way through
Aminoor Rahman
Written: 16th November 2025
Great quality and price. and amazing customer service !
Nabil Ebrhimgeel
Written: 16th November 2025
Very professional and helpful advice from start to finish. Wheels and tires arrived on date advised well packed. Look better than I expected once fitted. Very happy.
Trevor Lewis
Written: 16th November 2025
10/10 fast delivery and top quality
Coran Browne
Written: 16th November 2025
Really great quality wheels at a competitive price. Paul Murphy in the customer support team was really helpful as I wanted to ensure I got the exact wheel and tyre package I needed .
Mike Smallwood
Written: 16th November 2025
Great advice, quality products and speedy delivery.
John Gladstone
Written: 16th November 2025
Outstanding, the alloys were perfect
Ben Balgowan
Written: 16th November 2025
Great item and reasonably priced. Would definitely purchase again
Dane Hawthorne
Written: 16th November 2025
Wheelbase alloys was a brilliant company to deal with, kept me informed every step of the way, excellent value and wheels supplied with tires, Tpms set up and ready to fo straight on vehicle in just 3 days from ordering, excellent service all round
Lee Pennington
Written: 16th November 2025
Really Amazing Services keeping us updated during the full process. Good packaging and Best Quality of product As well. Highly recommended.
Syed Kabir
Written: 16th November 2025
Excellent service and very quick delivery of my order. All good and would definitely recommend!
Mike Russell
Written: 16th November 2025
These B21 alloy wheels are available in the following bolt pattern: 4x108 .
Wheelbase have built the most accurate fitment database in the wheel and tyre industry. We guarantee that the correct bolt pattern will be supplied for your vehicle with many checks being carried out to ensure an issue free buying experience.
These B21 alloy wheels are available in the following offset: .
Wheelbase have built the most accurate fitment database in the wheel and tyre industry. We guarantee that the correct offset will be supplied for your vehicle with many checks being carried out to ensure an issue free buying experience.
If you understand alloy wheel fitments please enter your required specification to the additional information section when you check out online. Alternatively, you can call our expert team on 0333 800 8000.
Add Accessories
Choose from our essential range of great value accessories
4x Locking Wheel Bolts/Nuts with Key
5 piece kit, comprises of 4 locking bolts/nuts (1 for each wheel) and a locking key. These are recommended to protect your purchase.
4x Chrome Sleeve Valves
Add the finishing touch to your new alloy wheels with Chrome Sleeved wheel valves and valve caps. Fits all alloy wheels. Comes in Pack form and contains 4 in a pack.
1x Bilt Hamber Auto-Wheel Cleaner
It is important to keep your alloy wheels clean in order to preserve their high quality finish - but using the wrong cleaner can give disastrous results. Choose our Waterless Wash and Shine to give a flawless finish.
