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dan_323 
Newbie 
Joined: 17-December-2002 Location: United Kingdom Status: Offline Points: 3 |
 Topic: 323 coupe tyre sizePosted: 17-December-2002 at 19:21 |
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Hi I've recently purchased a 98 323 coupe an m-series one, all very nice etc. apart from one thing. The guy I bought it off had it fitted with a set of 18in M3 wheels (Below), the tyres are Uniroyal Rain Sport 225/40 ZR 18 W all round, the problem is with too much weight in the back (a couple of fat people) I get tyre rub on the rear rims, also at full lock the fronts rub on the suspension strut (I think). As far as I'm aware the suspension is still standard, question is can I get away with fitting a different set of tyres (lower profile etc.) to stop the rub or do I need to modify the suspension??? Any sugestions??? |
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M3AG
Really Senior Member II 
7 series & e36 m3 registrar! (Madness) Joined: 17-October-2002 Location: Good Old Hertfordshire Status: Offline Points: 1644 |
Posted: 18-December-2002 at 09:31 |
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You could try rolling the lips of the rear arches, although it's better to get a pro to do it. Alternatively get some 17" M3 alloys with tyres and replace the ones fitted. If you go for lower profile tyres you may still get the same problem but also get a rougher ride into the bargain. On the suspension front, I'm unsure as it has M Tech suspension fitted as standard. Perhaps someone more knowledgable can step in there! |
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we're the Sweeney son, and we ain't had our dinner.....
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Webdunk
Moderator Group
M3 GT Register Joined: 16-October-2002 Location: Central Scotland Status: Offline Points: 5245 |
Posted: 18-December-2002 at 09:53 |
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IIRC the car started out with 195/60 R15. According to Toyo's tyre converter - http://www.toyo.co.uk/converter/table9d.html - there are a number of possible fitments @ 18" for you... none of which are 225/40. Try 225/35 maybe? Also worth a quick phonecall to a couple of BMW Specialists or even a dealer (they should have fitted 18s on your model - ACS or Alpina - before)and enquire as to what they find a suitable size... Personally I am running 235/40 17" with no problems. Oh, and your coupe does have M-Tech suspension - all coupes do. You could also stop giving big boned people lifts ;-) |
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JohnnyRob
Newbie
Joined: 22-December-2002 Location: United Kingdom Status: Offline Points: 13 |
Posted: 22-December-2002 at 22:03 |
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Here ya go Specification Sidewall Radius Diameter Circumference Revs/Mile Difference 225/40-17 3.5in 12.0in 24.1in 75.7in 837 -0.5% 235/40-17 3.7in 12.2in 24.4in 76.7in 827 0.8% 225/35-18 3.1in 12.1in 24.2in 76.0in 833 -0.0% 225/40's shouldn't be a problem on your Coupe; I have a friend with 225/40s allround - and another with 255/35's on the rear 18's can present a rough ride, a better bet for comfort, looks and affordability (replacement 18 tyres are costly) are 17 inchers, without a doubt. As you can see above, 225/40-17 are as near as spot on radius as you can get to the original, other than 225/35-18, and they are gonna cost loads..... Are you sure they are rubbing on the front strut? If they are then I'd check to i0 make sure the strut et al is OK and ii) make sure that they are not 9 inch rims on the front. You can get 9 & 8 inch rims (the 9's being for the rear), but they wont fit on the rear of the e36; they are e46 fitment.... I've got a set of '99 standard fitment 15inchers with 205 Goodyear rubber on my coupe which I hope to change in the new year; wanna do a deal...?
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323 coupe tyre size
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(but he has had his arches rolled!)