2006 Nissan 350Z — Track
The 2006 Nissan 350Z Track 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.
245/40R18 (Front)
| Section width | 245 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (98 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~25.7" |
| Revolutions per mile | ~784 |
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265/35R19 (Rear)
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (92.8 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~26.3" |
| Revolutions per mile | ~767 |
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What this size means for your Nissan 350Z
On the 2006 Nissan 350Z Track, the factory 245/40R18 measures about 25.7″ in overall diameter with a 98 mm (3.9″) sidewall, and completes roughly 784 revolutions per mile. Its 40-series aspect ratio gives a low-profile sidewall tuned for sharper handling, common on sport trims and larger-wheel packages. In tire terms it is a passenger (P-metric / Euro-metric) size.
This is a staggered setup: the front axle runs 245/40R18 and the rear runs 265/35R19. 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 Nissan 350Z 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 2006 Nissan 350Z trims
- Base Model 225/45R18 (Front) / 245/45R18 (Rear)
- Enthusiast Convertible 225/45R18 (Front) / 245/45R18 (Rear)
- Enthusiast Coupe 225/45R18 (Front) / 245/45R18 (Rear)
- Grand Touring Convertible 225/45R18 (Front) / 245/45R18 (Rear)
- Grand Touring Coupe 245/40R18 (Front) / 265/35R19 (Rear)
- Performance 225/45R18 (Front) / 245/45R18 (Rear)
- Touring 6-Speed 225/45R18 (Front) / 245/45R18 (Rear)
- Touring Convertible 225/45R18 (Front) / 245/45R18 (Rear)
- Touring Coupe 225/45R18 (Front) / 245/45R18 (Rear)
Nissan 350Z tire sizes by year
- 2009 Nissan 350Z 225/45R18 (Front) / 245/45R18 (Rear)
- 2008 Nissan 350Z 225/45R18 (Front) / 245/45R18 (Rear)
- 2007 Nissan 350Z 225/45R18 (Front) / 245/45R18 (Rear)
- 2005 Nissan 350Z 225/45R18 (Front) / 245/45R18 (Rear)
- 2004 Nissan 350Z 225/50R17 (Front) / 235/50R17 (Rear)
- 2003 Nissan 350Z 225/50R17 (Front) / 235/50R17 (Rear)
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.