1993 GMC C1500 — 2wd Pick-up
The 1993 GMC C1500 2wd Pick-up shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
225/75R15
| Section width | 225 mm |
|---|---|
| Aspect ratio (sidewall height) | 75% (168.8 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~28.3" |
| Revolutions per mile | ~713 |
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235/75R15
| Section width | 235 mm |
|---|---|
| Aspect ratio (sidewall height) | 75% (176.3 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~28.9" |
| Revolutions per mile | ~698 |
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What this size means for your GMC C1500
On the 1993 GMC C1500 2wd Pick-up, the factory 225/75R15 measures about 28.3″ in overall diameter with a 168.8 mm (6.6″) sidewall, and completes roughly 713 revolutions per mile. Its 75-series aspect ratio gives a tall sidewall of the kind used on trucks, SUVs, and older passenger cars, built for cushioning and load. In tire terms it is a passenger (P-metric / Euro-metric) size.
The 225/75R15 and 235/75R15 differ in both width and overall diameter (0.6″, 2.1%), which usually means a staggered front/rear setup — the two sizes are not interchangeable side to side, so match each to its correct axle.
Because the 1993 GMC C1500 predates many current tire lines, confirm this size is still stocked before ordering — some vintage fitments are now served mainly by specialty and classic-car tire suppliers.
GMC C1500 tire sizes by year
- 1999 GMC C1500 225/75R15 / 235/75R15
- 1998 GMC C1500 225/75R15 / 235/75R15
- 1997 GMC C1500 225/75R15 / 235/75R15
- 1996 GMC C1500 225/75R15 / 235/75R15
- 1995 GMC C1500 225/75R15 / 235/75R15
- 1994 GMC C1500 225/75R15 / 235/75R15
- 1992 GMC C1500 225/75R15 / 235/75R15
- 1991 GMC C1500 225/75R15 / 235/75R15
- 1990 GMC C1500 225/75R15 / 235/75R15
- 1989 GMC C1500 225/75R15 / 235/75R15
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.