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Tyre Size
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Author Post
mattsmyth   
Fri Apr 20 2012, 04:55am
What size of tyres is everyone using on their 17" VTS+ alloys? I have 50mm atm and they look far to big. Has anyone went a low as 35mm
Biohead   
Fri Apr 20 2012, 08:42am

Member No: #6049
Joined: Nov 05 2008
Location: Bracknell
 If you have standard 17 alloys, the two tyre sizes used on here are commonly 205-50 and 215-45. Both are approximately equal in terms of rolling radius.

The 2nd number on the tyre (50) is the size of the sidewall as a percentage of the width. So the standard sidewall size is 102.5mm.

I'm not certain, but I think they are the only two which fit the standard 17inch alloys. You want lower profile tyres you'll have to buy new wheels for them.
wozza   
Fri Apr 20 2012, 08:46am

Member No: #2
Joined: Aug 12 2006
Location: Manchester
 It would knock the speedo out in a big way going 35. The 50 is not a measurement in mm. But a percentage of the tyres width. In this case 50% of 205mm.

The standard wheel width stops you from running much wider than 215 so you ideally need to change wheels. Although going for a lower profile will not always give you better handling or grip. It will give you a harsher ride though.

(edit)Scott posted before me.
Jimux   
Fri Apr 20 2012, 12:36pm

Member No: #8137
Joined: Mar 08 2009
Location: Kent, UK
 It will also be more prone to pothole damage.
mattsmyth   
Wed Apr 25 2012, 05:01pm
So going for a 40 tyre is not a great idea then? I was hoping to get the car sitting a bit lower without the risk of rubbing.
BigJohnD   
Thu Apr 26 2012, 05:02am

Member No: #82
Joined: Jan 22 2007
Location: Hoylake
mattsmyth wrote ...

So going for a 40 tyre is not a great idea then? I was hoping to get the car sitting a bit lower without the risk of rubbing.

It won't lower the car - 40 means the sidewall is 40% of the tyre width, and the overall diameter will be almost the same. The ride will probably be much harder though.

The tyre size calculator is here: - Click Here -
mattsmyth   
Thu Apr 26 2012, 08:14am
Yea I know it won't lower the car but it will let me go lower on my coilovers without rubbing.
BigJohnD   
Thu Apr 26 2012, 08:39am

Member No: #82
Joined: Jan 22 2007
Location: Hoylake
 If you want 40 profile tyres, your best bet is 225×40 on 18" wheels.

Decent Michelin Pilot Sport 3 225×40 R18s are around £150 each fitted, and a set of good looking 18" alloys is around £500, so with a bit of luck, you could have the lot for under a grand or say €1,250.
 

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