2006 Jaguar XJ8 — Super V8 Portfolio
The 2006 Jaguar XJ8 Super V8 Portfolio came from the factory equipped with 255/35R20 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
255/35R20
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 35% (89.3 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~27" |
| Revolutions per mile | ~746 |
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What this size means for your Jaguar XJ8
On the 2006 Jaguar XJ8 Super V8 Portfolio, the factory 255/35R20 measures about 27″ in overall diameter with a 89.3 mm (3.5″) sidewall, and completes roughly 746 revolutions per mile. Its 35-series aspect ratio gives an ultra-low-profile, performance-oriented sidewall that favors steering precision over ride cushioning. In tire terms it is a large-diameter fitment.
On a vehicle of this age, the Jaguar XJ8 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 Jaguar XJ8 trims
- Base Model 235/50R18 / 255/40R19
- Super V8 255/40R19
- Vanden Plas 235/50R18 / 255/40R19
Jaguar XJ8 tire sizes by year
- 2009 Jaguar XJ8 255/40R19
- 2008 Jaguar XJ8 235/50R18 / 255/40R19
- 2007 Jaguar XJ8 235/50R18 / 255/40R19
- 2005 Jaguar XJ8 235/50R18 / 255/40R19
- 2004 Jaguar XJ8 235/55R17 / 235/50R18
- 2003 Jaguar XJ8 225/60R16
- 2002 Jaguar XJ8 225/60R16
- 2001 Jaguar XJ8 225/60R16
- 2000 Jaguar XJ8 225/60R16
- 1999 Jaguar XJ8 225/60R16
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.