1990 Ford Probe — GT
The 1990 Ford Probe GT 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.
195/60R15
| Section width | 195 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (117 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~24.2" |
| Revolutions per mile | ~833 |
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205/60R15
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 60% (123 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~24.7" |
| Revolutions per mile | ~817 |
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What this size means for your Ford Probe
On the 1990 Ford Probe GT, the factory 195/60R15 measures about 24.2″ in overall diameter with a 117 mm (4.6″) sidewall, and completes roughly 833 revolutions per mile. Its 60-series aspect ratio gives a taller, comfort-biased sidewall that favors ride quality and shrugs off rough pavement. In tire terms it is a passenger (P-metric / Euro-metric) size.
The 195/60R15 and 205/60R15 differ in both width and overall diameter (0.5″, 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 1990 Ford Probe 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.
Other 1990 Ford Probe trims
Ford Probe tire sizes by year
- 1997 Ford Probe 195/65R14 / 205/55R15
- 1996 Ford Probe 195/65R14 / 205/55R15
- 1995 Ford Probe 195/65R14 / 205/55R15
- 1994 Ford Probe 195/65R14 / 205/55R15
- 1993 Ford Probe 195/65R14 / 205/55R15
- 1992 Ford Probe 185/70R14 / 195/70R14
- 1991 Ford Probe 185/70R14 / 195/70R14
- 1989 Ford Probe 185/70R14
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.