Help · Guides & tools
Help Center
Step-by-step how-to guides, part finders and calculators for tires, wheels and the tools to service them.
How-To Guides6
How to Measure a WheelDiameter, width, bolt pattern and offsetOpen the guide
How to Install Tire ChainsDrape, fasten, tension and retightenOpen the guide
How to Repair a TireWhen it can be fixed, then plug and patchOpen the guide
How to Torque Lug NutsSpec, star pattern, stages and re-torqueOpen the guide
How to Mount and Seat a Tire SafelySafety rules and the 40 psi limitOpen the guide
TPMS Service GuideService kits, torque and relearnOpen the guide
Finders7
Tire Size DecoderRead every part of a tire sizeOpen the finder
Valve Stem FinderTPMS, rim hole, thickness and pressureOpen the finder
Air Coupler IdentifierTell M, A, T, V and L styles apartOpen the finder
Wheel Weight FinderClip style by vehicle and wheelOpen the finder
Lug Nut FinderThread, seat and hexOpen the finder
Inner Tube FinderTubes and flaps by tire sizeOpen the finder
Tire Stud Size FinderTSMI size from the hole depthOpen the finder
Calculators2
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