cat199

im getting some 18" wheels and was wondering whether they would fit hassle free. i currently have the standad 15" wheels from my catalunya.

Mickle

Depends on the tyre size and offset, do you know these?

cat199

m sure the bloke said 205/40/18 hankook tyres

ricco

the best size for 18's on a classic is 215/35/18. You'll need a 48 - 52 offset.

Mickle

The 40 profiles are for the New Age Impreza's, you'll need a 35.

cat199

cheers rico, dont want to sound cause im new to the modding game but what is the 48-52 offsetting

cat199

oh right i will check tomorrow hopefully they are 35s and i heard him wrong

will this make a big difference

chrisp

215x35x18 spray on rubber

cat199

pretty sweet wheels are you alloys alright with these tyres or do you curb them alot

chrisp

Caught them once in 18 months on a curb, a back wheel, just nudgeit and can hardly see the mark. There a few little scrapes but thats mainly stones and the odd pothole. teh tyres sort of overhang the rim. The rims are Speedline GT1 lites BTW. This is a better shot of the alloys

ricco

Cat. the offset is the distance from the centre of the rim to where the bolts bit is (technical term). If you imangine an imaginary line down the centre of the rim (width ways) a zero offset would mean that the bit with the bolts runs along that line.

Sorry, not really very good at explaining it, if you do a search you may find a better explanation.

I'm just looking to get some 18's for my Cat too, Scoobyport are recomending a 48 offset but some folks reckon 50 to as much as 55!

It depends on the width of the wheel too. i reckon an 8" wide rim is just a touch too wide, 7" or 7.5" is more suited to the classic.

PS. This is just from what I've read on Scoobynet, i'm certainly no expert

wrrjones

ive got 225/35/18 on my bug eye seem fine ...but not a lot of rubber betreen the road and rim lol....

scooby_si

I wood recommend doing the geometry thing while yer getting em fitted as it will save u more in rubber than it costs 2 do potentially & will also make car feel sweeter
Si (learnt from experiance )

cat199

thanks for the advice its been very useful i will tell the garage this

co55ie

The offset is a measurement from the centre part of the wheels width to the innerface of the mounting hub of the wheel. In your case you need a wheel thats mounting is around 48mm from the centre. Offset is absolutely crucial and do not stray more than 5mm from the manufacturers offset as this will cause undue stress to the suspension components and also put the geometry out. If you do make the jump from 15 to 18" rims make sure you get the wheels realigned to prevent your tyres wearing out in less than a couple of thousand miles.

I would also personally avoid cheap wheels and tyres having seen some impact tests carried out on cheap rims. Speedline and OZ are both excellent also try and go for as light a wheel as possible this will offer a significant performance gain as it is unsprung weight. Hope this is of help

[Edited by co55ie - 3/11/2003 10:58:50 PM]

Alex NL

I've got 215/35/18 on P1's.

Alex.



[Edited by Alex NL - 3/12/2003 12:31:05 AM]

WUZ

iTrader: (14)

I'm running 8X18" Compomotive MO's with 215/35/18 with no rubbing at all so far (3up on a hard country road run last night)


This is on a 50mm offset - stick to 48-52 for 7-7.5" diameter wheels

Russell

[Edited by WUZ - 3/12/2003 9:32:26 AM]