1998 GMC GMC Jimmy — ZR2
The 1998 GMC GMC Jimmy ZR2 came from the factory equipped with 31X10.50R15 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
31X10.50R15
| Overall diameter | 31" |
|---|---|
| Section width | 10.5" |
| Rim diameter | 15" |
| Revolutions per mile | ~651 |
- Check 31X10.50R15 price at TireRack
- Check 31X10.50R15 price at SimpleTire
- Check 31X10.50R15 price at Priority Tire
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Other 1998 GMC GMC Jimmy trims
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.