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Re: Running 18's
[Re: Broombeastie]
#1250215
17/08/2011 17:25
17/08/2011 17:25
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Joined: Dec 2005
Posts: 2,168 London
EDz
Competition Level
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Competition Level
Joined: Dec 2005
Posts: 2,168
London
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I run 225 35 18s They are virtually the same height at the stock wheels and tyres Not noticed any performance difference But ride quality is the issue - had my 16`s on last year for Stanford hall - Auto italia - felt lovely But 18s do look cool
e46 M3 330D Sport
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Re: Running 18's
[Re: Broombeastie]
#1250237
17/08/2011 18:19
17/08/2011 18:19
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Biggenz
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Biggenz
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I wonder if there really is a massive difference betweeen 17's and 18's? My ride is pretty good with 17's, and I'm thinking about trying out some 18's.
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Re: Running 18's
[Re: Broombeastie]
#1250240
17/08/2011 18:21
17/08/2011 18:21
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h2ypr
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h2ypr
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Bear in mind that 18's are usually heavier as well, which will impact on ride quality and handling.
So as regards a performance increase, unless the weight is the same as a standard wheel or less, your unlikely to benefit from any other changes.
Ross
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Re: Running 18's
[Re: Broombeastie]
#1250242
17/08/2011 18:24
17/08/2011 18:24
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DidCoop
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DidCoop
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Rolling radius wise with a low profile tyre you shouldn't notice a great deal of difference performance wise! Only thing you will find is they're heavier and the ride will be firmer due to the lack of tyre lol!
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Re: Running 18's
[Re: Broombeastie]
#1250601
18/08/2011 18:14
18/08/2011 18:14
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Biggenz
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Biggenz
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Does anyone know if you can run 7.5J 18" rims without any problems?
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Re: Running 18's
[Re: Per]
#1250612
18/08/2011 18:52
18/08/2011 18:52
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Joined: Sep 2009
Posts: 5,022 ation
szkom
Club member 2000
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Club member 2000
Forum is my life
Joined: Sep 2009
Posts: 5,022
ation
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The 225/35-18 tire has the exact std Fiat radius so no change at all there. Actual or effective rolling radius? The two are very different.
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Re: Running 18's
[Re: ]
#1250673
18/08/2011 20:49
18/08/2011 20:49
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Joined: Mar 2006
Posts: 223 Billericay, Essex
Broombeastie
OP
Making a profit
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OP
Making a profit
Joined: Mar 2006
Posts: 223
Billericay, Essex
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Does anyone know if you can run 7.5J 18" rims without any problems? I believe if you run 35 profiles you'll have no probs, not sure about 40's though.
Back into retirement, for now at least . . . Broomy will come out to play next year
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Re: Running 18's
[Re: Broombeastie]
#1250677
18/08/2011 20:52
18/08/2011 20:52
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Biggenz, I think mine are 8.5 j, 18"
Now in the 400+ bhp club!
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Re: Running 18's
[Re: Broombeastie]
#1250678
18/08/2011 20:53
18/08/2011 20:53
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Biggenz
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Biggenz
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Cheers, but I'm more after the max width of the rim you can run.
I've got 17x7 on at the moment, and the rims I want only come in 18x7.5 or wider.
What's the widest rim you can put on the coupe, does anyone know?
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Re: Running 18's
[Re: Broombeastie]
#1250682
18/08/2011 20:56
18/08/2011 20:56
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Look above mate, lol. Mine are 8.5.
Now in the 400+ bhp club!
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Re: Running 18's
[Re: Broombeastie]
#1250683
18/08/2011 20:59
18/08/2011 20:59
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nismo
Unregistered
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nismo
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mine are 8.5j with a 215 tyre on , lowered 30mm and i get no rubbing but i wouldn't go any wider .
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Re: Running 18's
[Re: Broombeastie]
#1250688
18/08/2011 21:01
18/08/2011 21:01
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Biggenz
Unregistered
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Biggenz
Unregistered
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Oops!
How do you fit a 215 tyre on an 8.5J rim?? Surely the tyre is way too narrow?
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Re: Running 18's
[Re: Broombeastie]
#1250766
18/08/2011 22:20
18/08/2011 22:20
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nismo
Unregistered
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nismo
Unregistered
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it has the drift look but the rolling radius is the same as the 20vt standard wheel , when i need to change the tyres i will be going for a 225/40 or 35 .
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Re: Running 18's
[Re: Broombeastie]
#1250837
19/08/2011 00:08
19/08/2011 00:08
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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I think 225/40 might just rub here and there. I have 225/35, no problem!
Now in the 400+ bhp club!
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Re: Running 18's
[Re: technics]
#1250938
19/08/2011 10:16
19/08/2011 10:16
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roly
Unregistered
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roly
Unregistered
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Re: Running 18's
[Re: Broombeastie]
#1251008
19/08/2011 13:51
19/08/2011 13:51
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nismo
Unregistered
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nismo
Unregistered
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35's it is then and i'v replyed to you pm roly .
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Re: Running 18's
[Re: Jimbo]
#1251016
19/08/2011 14:09
19/08/2011 14:09
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h2ypr
Unregistered
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h2ypr
Unregistered
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225/40 will rub on full lock. I have 215/40/18 on mine and I had to remove the first 5mm of the vents in the front wheel arch to stop the rubbing. I had 18's on my old coupe and had no rubbing. I ran 215/35/18's with 20mm spacers. Bk racing wheels. Ross
Last edited by h2ypr; 19/08/2011 14:21. Reason: ah you mentioned 225's
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Re: Running 18's
[Re: Jimbo]
#1251142
19/08/2011 18:29
19/08/2011 18:29
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h2ypr
Unregistered
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h2ypr
Unregistered
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225/40/18 will rub Ross, it's a wider tyre and has a higher side wall so the combination will cause rubbing. Spacers don't solve rubbing issues, they just give the correct offset or clearance from the caliper. Yeah edit note was to explain noticed 225/40. Only mentioned spacers to show setup when fitted. Makes sense now. Ross
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Re: Running 18's
[Re: Broombeastie]
#1251718
21/08/2011 14:29
21/08/2011 14:29
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Joined: Dec 2005
Posts: 2,168 London
EDz
Competition Level
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Competition Level
Joined: Dec 2005
Posts: 2,168
London
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I was talking about 225 so should be 35s and there still very slightly taller than stock But what ever work for everyone -
e46 M3 330D Sport
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Re: Running 18's
[Re: Broombeastie]
#1251732
21/08/2011 15:27
21/08/2011 15:27
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nismo
Unregistered
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nismo
Unregistered
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215/35/18 is a correct rolling radius for the standard wheel on a coupe with 205/50/16 or 225/45/16 check for yourself - http://www.rtecshop.com/?p=calculatorwith 215/40/18 your Speedo will be 3.3% too slow and When your speedo reads 60 mph, your actual speed will be 62.0 mph with 225/35/18 your Speedo will be 0.8% too slow and When your speedo reads 60 mph, your actual speed will be 60.5 mph
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Re: Running 18's
[Re: Jimbo]
#1252040
22/08/2011 03:34
22/08/2011 03:34
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Joined: Dec 2005
Posts: 2,168 London
EDz
Competition Level
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Competition Level
Joined: Dec 2005
Posts: 2,168
London
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215/40 is a correct rolling radius EDz. The 40 just gives you that extra side wall to make the ride slightly more bearable. Looks like your wrong I can live with 225 35s
e46 M3 330D Sport
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Re: Running 18's
[Re: EDz]
#1252063
22/08/2011 09:45
22/08/2011 09:45
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roly
Unregistered
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roly
Unregistered
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Re: Running 18's
[Re: ]
#1252521
23/08/2011 15:21
23/08/2011 15:21
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Joined: Dec 2005
Posts: 2,168 London
EDz
Competition Level
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Competition Level
Joined: Dec 2005
Posts: 2,168
London
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215/35/18 is a correct rolling radius for the standard wheel on a coupe with 205/50/16 or 225/45/16 check for yourself - http://www.rtecshop.com/?p=calculatorwith 215/40/18 your Speedo will be 3.3% too slow and When your speedo reads 60 mph, your actual speed will be 62.0 mph with 225/35/18 your Speedo will be 0.8% too slow and When your speedo reads 60 mph, your actual speed will be 60.5 mph Actually with a Fiat speedo might be spot on
e46 M3 330D Sport
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