2002 Porsche 911 — Carrera Targa

The 2002 Porsche 911 Carrera Targa shipped with 4 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.

205/50R17 (Front)

Section width205 mm
Aspect ratio (sidewall height)50% (102.5 mm)
Rim diameter17"
Overall tire diameter~25.1"
Revolutions per mile~804

Compare prices at:

255/40R17 (Rear)

Section width255 mm
Aspect ratio (sidewall height)40% (102 mm)
Rim diameter17"
Overall tire diameter~25"
Revolutions per mile~806

Compare prices at:

225/40R18 (Front)

Section width225 mm
Aspect ratio (sidewall height)40% (90 mm)
Rim diameter18"
Overall tire diameter~25.1"
Revolutions per mile~804

Compare prices at:

285/30R18 (Rear)

Section width285 mm
Aspect ratio (sidewall height)30% (85.5 mm)
Rim diameter18"
Overall tire diameter~24.7"
Revolutions per mile~815

Compare prices at:

What this size means for your Porsche 911

On the 2002 Porsche 911 Carrera Targa, the factory 205/50R17 measures about 25.1″ in overall diameter with a 102.5 mm (4″) sidewall, and completes roughly 804 revolutions per mile. Its 50-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.

This is a staggered setup: the front axle runs 205/50R17 and the rear runs 255/40R17. The two sizes are not interchangeable, so order each for its correct axle and don't rotate front-to-rear.

On a vehicle of this age, the Porsche 911 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 2002 Porsche 911 trims

Porsche 911 tire sizes by year

See every Porsche 911 year & trim →

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.