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Tips for making your wheels and tires fit better

Getting ready to roll some fenders or considering downsizing your tires? Read this first.

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18 pros offer their speed secrets for success

Going faster than the next guy involves more than just stomping harder on the throttle. Some knowledge and preparation can pay huge dividends.

How to accurately measure compression ratio

After building an engine, the bombardment of questions soon follows. Unfortunately, you might not know the answer to one important question: What is your engine’s compression ratio?

GRM+
How to bulletproof a Chevy C5 Corvette for track duty

Not sure how to best prepare a car for track duty? Here's all the work we've put into our C5 Corvette project car since we first got it.

How to turn a lawnmower into a yard kart

Who says that a go-kart has to be based on a lightweight, purpose-built frame imported from Italy?

GRM+
How to turn an ordinary couch into a RaceCouch

Georgia Tech’s Wreck Racing transformed a couch–itself a team member of long standing–into a motorized piece of living room furniture.

GRM+
How to build an effective splitter for only $100

After running our 350Z through the digital wind tunnel, we could attach the actual bits that would make it faster in real life.

What we've learned after a lifetime of project cars

What wisdom have we gleaned from years of GRM project cars? We're glad you asked.

GRM+
How to master chassis setup, from tires pressures to alignment

Looking for some additional speed? Take a look at your chassis setup.

GRM+
14 ways to go faster without spending a dime

Before spending big bucks in search of more power, make sure you’re getting the most out of what you already have.

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