I have a 1995 XJ6 Vanden Plas fitted with XJR R1 (X308) wheels and tires (tyres) which the previous owner installed. I need to know what the pressure should be for both the front and rear tires. Been searching all over different Jag sites and have yet to find the info I need. Please help!

Thanks,
Aaron

 

Unfortunately, you're in the '97 and up 8 cylinder XJ forum... Can't help you.

 

your question is reasonable for this part of the forum since the wheels you are inquiring about were fitted to X308s.

I just looked at my tire pressure sticker in my center console. If the R1's are the 255/35R19 wheel, you want:

Front Tire
<100mph: 32psi
>100mph: 34psi

Rear Tire
<100mph: 35psi
>100mph: 36psi

 

I really don't understand why this thread was moved.

The tires are P 255/40 ZR 18 95W Continentals. The thing I don't understand is how both the front and rear have the same exact numbers/letters but the rear tires are wider than the front. Isn't one of those numbers the width? I know so little about tires. Can you tell?

 

"255" is the width.

If the rear wheels are wider than the fronts the rear tires will take on a differnet, wider appearance. However, I don't believe Jaguar used staggered wheel widths on the XJRs of that era.

Cheers
DD

 

See post #2. You posted in the wrong section.