Is there any alternative to 235/50/17 for the s type?
Must be for 17" wheels though would 245 45 17 be ok for the rear drive wheels? Or will they rub??
Is 225 55 17 an option?
Thanks

 

In google put
tyre calculator
and use any you like

but I think 225 may be narrower than jag min spec in which case you may be illegal and probably uninsured even if legal.

I don't recall seeing the min spec but then I wouldn't be trying to fit narrow tyres!

 

Posting at 4:55 AM is unlikely to get many immediate answers. Most members are in North America.

Installing tires that differ in diameter from front to rear will set an ABS and DSC error.

 

I thought that this would only happen on four wheel drive cars! How will it throw an error on a rear wheel drive only car?
You often see fatter tyres on rear wheel drive cars

 

Mikey is talking about different diameter tires. You are correct the width should not cause that.

The S Type uses the ABS so it monitors all 4 wheels. It's very likely to throw the car in limp home mode with different front and rear tire diameters.
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I know this is off topic but does anyone know what the offset for 16" wheels is on a 2002 s-type? Is it 40mm or 60mm?

 

Yes exactly.

235/50/17 = 26.3 in. dia. or 82.4 in. circumference

245/45/17 = 25.7 in. dia. or 80.4 in. circumference

225/55/17 = 26.7 in. dia. or 84.0 in. circumference

That difference is possibly enough to upset the ABS or DSC.

 

I've just purchased two Continental contact sport 235 50 17 Tyres so shouldn't have any problems.
Thanks

 

Width has an effect on aspect ratio (wall thickness/hight)
A 245 50 17 Tyre will have a longer rolling circumference then a 235 50 17 tyre as the aspect ratio is a percentage of the width.

 

Which is why you should try to match the diameter as close as possible when increasing the width. You can usually get pretty close.
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Given that everyone is now agreeing with everyone else, the only important factors are "rolling radius/circumference" and desired tread width - the former is a function of rim radius and tyre section and these can be manipulated to quite wide tyres of decreased section.

Check specs of MY2008 S-Type ... Front are 245/35 R19 on 19x8.5 rims ... Rear are 275/30 R19 on 19x9.5 rims. Yep; different front to back; but near enough to identical rolling radius.

I suspect there are even those who have wondered about fitting hundreds of really large black O-rings to 30inch alloy wheels Hahaha
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Thanks for your reply. At last......
So I can confirm that some people have put different width tyers on the back without issue. As long as the rolling circumference is the same or near as.
Thanks again

 

You have it absolutely correct Steve.

As I pointed out, the first people to do this were Jaguar themselves, starting from Jan 2007 in standard spec (at least for the S-Type MY2008 Sport and Luxury) for cars delivered to Oz ... and other markets also?

There is a thread somewhere back in the forum here about fitting 20 and 22 inch rims - but I bet that's rim diameter; not width!!!

Don't laugh too loud though ... briefly drove a V12 twin turbo Ferrari Testa Rosso in Germany several years ago ... and my recurring memory is that it had 18x20inch rears - yep, 20inches wide; and they still chirped when snapping into second gear. Sort of like our S1 4.2 E-Type on a giant defibrillator!!!
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Sorry for the double post ...

I am remiss in overlooking what I should have pointed out earlier. Being in Old Blighty, you should be able to check out prices and availability for upgrading to larger and wider rims in your local area.

Suggest you start here on the forum in the downloads thread to locate the features/accessories pics of all the alloy rims supplied by Jaguar for your model ... and later. Aruba rims are common; many go for Melbourne; entirely your call if you can spring the pounds ... but you will have the advantage of tailoring all rims and tyres to your choice and ... still true to an original S-Type package if that is important to you.

BTW; WOW - that's one beautiful looking machine you have on your intro thread. Plz keep us posted with pics if you do upgrade wheels and tyres.
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Jaguar Club of North America posted the attached "Original Equipment Tire and Wheel Information" file containing all Jaguar approved tire sizes and wheel manufacturers. This list was last updated in 2010. Don't know if this helps.

Also, if you go to the TireRack.com site (they're an online tire retailer) you can put in your car info and see various tire sizes that are suitable for your car. The specs tab will list all kinds of nifty info on each tire size. You can even speak to or chat with a sales rep who can probably answer your questions.
Steve

 

I have a 03 s type r so obviously different rims but the space in the wheel well should be about the same. I have 265/40 18 in front on stock 18x8 rims and 285/40 18 in back on stock 18x9.5 rims. Fronts don't rub at all and rears rub only when driving hard (forest area roads so not real smooth) and it only rubs on the fluff plastic nothing solid. Considering your rim width on a s type (non r) it would probably to get too wide of a tire