They're both 235's on the QS :wink:

 

Thanks Mark, just thought I'd check ;-)

 

Careful gogs, you're turning into Damien

 

ideally they can not be the same,,,, if you are more interested in looks than function i guess you can fit anything to them

 

225/40-18 on the 8J and 235/35-18 on the 8.5J

 

215/40 on 8j, 225/40 on 8.5

 

Can't help with the 8.5's but I'm running 8J all round on 225/40's

 

I'm looking at 19" with ET32 but 5 x 112, from what I can work out I can't get an adaptor that will keep the fronts within the arch :-(

Am I correct in thinking this?
Kaz I know your a bit of a wheel guru ;-)

 

Careful gogs, you're turning into Damien

Ha ha, I wish I had half the knowledge you guys do!

I need answers :-o. Aaaarrrggghhh

 

sorry, dont wish to further confuse,, but what is 8JJ ? ( thats what mine are )

 

Gogsy, mate, I run 235s on my 8J rims, for a bit of wheel protection. Have a look at the carbibles website for info on the rubber width ranges possible on any given rim width. You've got some choice, depending on whether you want a little bit of stretch, or like 'em a little chunky. Saw some 245s on an 8J rim up at The TT Shop one day, which looked good, but I'd say that's about as wide as you'd want to go.

Carbibles also has a rolling circumference calculator, so you can see what profile tyre you need on what width rim so they match.

 

Careful gogs, you're turning into Damien

Ha ha, I wish I had half the knowledge you guys do!

I need answers :-o. Aaaarrrggghhh

Its ok Gordon, its good to be me... :lol:

Which wheels are you looking at that are et32?

Damien.

 

Ye Gordon - what wheels are you fitting?!! lol

 

http://www.carbibles.com/tyre_bible_pg4.html#slr

As a rule of thumb if you're fitting wheels with a different stud pattern your gonna need something with a high offset to allow for the PCD Adaptor - My Alloys are ET52 and 9" wide.

 

Wheels are 5 x 100, ET32, 8.5J, 19" so no adaptors required
Just the pesky tyre issue to sort out

 

235 / 240

 

Hey Roddy,

I was looking at 235 35 19 front and 245 35 19 rear but am not sure if this will bugger up the haldex !
Any thoughts?

 

There is only 7 mil difference in rolling diameter which is 1.08%...as long as the diff is less than 2% your haldex should be ok.

 

Thanks ades, how do I know if the diff is 2% ?

 

TBH, i cant understand why anyone would fit diff size tyres on same size rims,, it is going to cause different handling characteristics,,, if i had 8.5 i would go for 240 x 40,,, ( i think :? )

 

I had planned to go 235 35 all round but had a chance of 2 tyres 245 35 at a very good price and just thought it may be an option

 

TBH, i cant understand why anyone would fit diff size tyres on same size rims,, it is going to cause different handling characteristics,,, if i had 8.5 i would go for 240 x 40,,, ( i think :? )

Not true but I know what you're saying. I'm in a similar position to Gordon at the moment and am probably guilty of planting the seed of using wider tyres on the rear. This is purely my preference on aesthetics but more rubber grip should theoretically enhance handling charateristics but we're splitting hairs here as were only talking about 10mm.

Incidentally I could of opted for 225 . 35 . 19 on the fronts but the tyre stretch required to fit my 9" rims would throw the rolling diameter out by more than fitting the 235 / 35 / /19 so i've opted for the 235's which keeps the tolerance under 2% between the fronts and rears...

Cheers Craig

 

standard fitment on my QS wheels is 235/40/18's all round mate.

Slightly stretched on the back, but still plenty of kurb protect from the tyres.

 

I'm looking at 19" with ET32 but 5 x 112, from what I can work out I can't get an adaptor that will keep the fronts within the arch :-(

Am I correct in thinking this?
Kaz I know your a bit of a wheel guru ;-)

Gordon, I calculate if you use 15mm Adaptors both Fronts and Rears will be 6mm inside the arches based on 8" rims on the front and 8.5 on the rear. The calculator below is approx 5mm inaccurate so 1mm inside is actually more like 6mm.

http://www.senebdesign.com/Auto/TT-offsetcalc.htm]

Cheers Craig

 

Hi Craig,

No adaptors required as the wheels are 5 x 100 ET32 both front and rear are 8.5J