Quick question

As you may well know, my furby has those 17" wheels, currently housed with 205x40x17 tyres.

However, I'm wondering about the width. The tyres do seem rather stretched to cover the alloy, i.e they're not wide enough - also makes for real easy alloy curbing when I park carelessly

As I'll soon need to change, should I get some 215 tyres? If so, should i stick with 40 profile or go to 35 to keep similar rolling road radius?

What are your thoughts chaps?

P.S can't remember what the alloys are - whether 7.5, 8 or 8.5 wide

You would have to go for 215/35

altho dont expect much in ride comfort with them size rubber bands tho

And even less kerb protection from a 35 profile tyre.

TT wheels are 7.5 inches wide iirc.

Could allways just learn how to park :P

Wish I had some kerb protection, my alloys protrude the tyres a good 2.5mm :(

Swmbo has already made a lovely kerb mark

er, the wheel protection would be the same and so would be comfort as he wouldn't actually be making the tyres any smaller height wise, but instead making them wider but then having to go lower profile due to the width. so X i wouldn't expect the ride to be any worse, if anything a bit better as thee would be more rubber on the ground. have a quick check if you have the clearance first though. good luck with your decisions

Isn't 225/35 possible with those size rims?

If not, 215/35 if your concerned about how it looks and handles (low profile, and lower COG). Safer-side would be the 40s..

Safer-side would be the 40s..

safer how?

Well, there's only a 1.3% differenc with 215/40 and 205/40, so don't think 35s are dead essential. I jumped over 3% when going to 205/40 from 185/60 R14...

I had 7.5s on my old car, but the tyres never looked stretched to me. :confused:

So is 215/40 ok then?

Also, I can't remember which way round you're allowed to have different tyres. Which is OK: larger tyres at front, smaller at rear or vice versa?

don't matter as long as left and right match. if you have bigger fronts then you will be more likely to get over steer and bigger backs are more prone to under steer due to difference in grip. but seeing as you have a FWD car i'd go for bigger front if anything then make the rears matchs as soon as your are wearing

So is 215/40 ok then?

Also' date=' I can't remember which way round you're allowed to have different tyres. Which is OK: larger tyres at front, smaller at rear or vice versa?[/quote']

I think you can do what you like, as long as the same size is on each axle.

I'dlike to go for 215/40s on the front, for a little more rubber on the ground.

if you're not changing all 4, better tyres on the back with fwd

What does matter though is having different rolling radius wheels on the front to the rear with regards to ABS. But if its only 1.3% difference then you should be OK.

However the difference is price, not that much in it but they area bit more expensive. Also may well catch on the rear arches from time to time if you end up going for a full set. Also will look a little odd. 4mm difference in rolling diameter (2mm in radius) its less difference than a new to part worn tyre.