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TPMS and Fitment Basics
Sensors, relearns and plus-sizing without surprises.
Direct vs. indirect
Direct TPMS uses a sensor in each wheel. Indirect systems use ABS wheel-speed data and need a reset after tire service.
Service kits and relearns
Replace valve cores, seals and nuts when servicing direct sensors. Many vehicles need a relearn procedure after rotation or sensor replacement.
Plus-sizing
When going to a larger rim, keep overall diameter within about 3% of OE so the speedometer, ABS and stability systems stay accurate, and keep load capacity at or above OE.
Clearance
Check suspension, brake and fender clearance at full lock and full compression before committing to a wider fitment.