2003 Toyota Celica — GTS
The 2003 Toyota Celica GTS 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.
205/55R15
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (112.8 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~23.9" |
| Revolutions per mile | ~845 |
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205/50R16
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (102.5 mm) |
| Rim diameter | 16" |
| Overall tire diameter | ~24.1" |
| Revolutions per mile | ~838 |
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What this size means for your Toyota Celica
On the 2003 Toyota Celica GTS, the factory 205/55R15 measures about 23.9″ in overall diameter with a 112.8 mm (4.4″) sidewall, and completes roughly 845 revolutions per mile. Its 55-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a passenger (P-metric / Euro-metric) size.
The 205/55R15 and 205/50R16 roll within 0.2″ (0.8%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
On a vehicle of this age, the Toyota Celica may have been refitted with a slightly different replacement size somewhere in its life, so check the current sidewall — not just the factory spec — before buying.
Other 2003 Toyota Celica trims
- GT 195/60R15
Toyota Celica tire sizes by year
- 2005 Toyota Celica 195/60R15
- 2004 Toyota Celica 195/60R15
- 2002 Toyota Celica 195/60R15
- 2001 Toyota Celica 195/60R15
- 2000 Toyota Celica 195/60R15
- 1999 Toyota Celica 205/55R15
- 1998 Toyota Celica 205/55R15
- 1997 Toyota Celica 205/55R15
- 1996 Toyota Celica 205/55R15
- 1995 Toyota Celica 205/55R15
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.