Grassroots Motorsports Magazine

12/19/2025

Meet "Project Hellrotten," a barn-find E36 M3 track machine fitted with an S65 BMW V8 and a DCT from an E92 M3. Read more at the link in the comments.

📷 Terry Fair

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The Tire Rack Ultimate Track Car Challenge is presented by Grassroots Motorsports and fueled by Sunoco, in association with Wilwood, Vitour Tire, CRC Industries, Vbox Motorsport and Red Line Oil, with trophies from BimmerWorld, Nine Lives Racing and Falken Tire.

12/19/2025

There's still time to give them the gift of choice with a Grassroots Motorsports Digital Gift Card. Buy one (or more) at the link in the comments.

12/18/2025

Can the Vitour Tempesta Sonic usurp the top-performing streetable track tires? We compare it against the Goodyear SuperCar 3R and Hoosier TrackAttack Pro to find out. Read more at the link in the comments.

📷 Timothy Harper

12/18/2025

Keep your hands busy during the winter break by building your entry into the Grassroots Motorsports $2000 Challenge. Learn more at the link in the comments.

📷 Dave Green

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The Grassroots Motorsports $2000 Challenge is Presented by Tire Rack and Powered by AutoBidMaster, in Association with CRC Industries, A&A Manufacturing, Knight's Automotive and BendPak.

12/17/2025

A staff member's project car is a perfect excuse to give some of the newer members of the editorial staff more hands-on experience. Call it a team-building exercise, GRM style.

12/17/2025

Exciting things are happening in the GRM shop today. (Stay tuned...)

12/17/2025

When and say “come see how it’s done,” you don’t say no. Shaker rig testing, real-world data, and serious suspension development—thanks for having Grassroots Motorsports in the room. 📊⚙️

12/17/2025

Yes, proper driver position is essential for going faster, but so is driver comfort. Read more at the link in the comments.

12/17/2025

Unsure which tire is right for you and your car's needs? Tire Rack's Tire Decision Guide can help.

What tire size do I need? Ditch the guesswork! Find the best tires for your vehicle and driving style using our Tire Decision Guide. Get the right tires and more Today!

12/17/2025

Sure, you could wait for the latest issue of Grassroots Motorsports to arrive in the mail–or you could read it now, digitally, by subscribing to GRM+ today. Learn more at the link in the comments.

12/16/2025

This tribute to the famed 1984 Nürburgring Race of Champions features a not-so-period-correct LS1 V8 under the hood. Read more at the link in the comments.

📷 714 Garage/eBay Motors

12/16/2025

Here's how we changed the brake pads on a Hyundai Ioniq 5 N–and cleared the error codes–all without a Professional Mechanic’s Login. Read more at the link in the comments.