Wheel offsets

[Dnk]

Can anyone tell me what offset to use on these size wheels without having to roll the arches but to have them out as far as possible

 

8 x 18 front and 9.5 x 18 rear

 

Thanks

[dandan]

How hard is your suspension and how low do you want to go? Also, what size tyres?

 

I ran a 30 offset rear on a 9.5x18 with 275/35/18 Eagle F1 and it was fine with my Tein suspension. When I changed to CW's softer setup the tyres would hit the arches on hard bumps.

 

With an 8" up front I presume you'll run a 235 so a 30 offset should easily work. My brother runs an 8.5" with a 30 offset and 245/35/18 Eagle F1s without issue. You might even be able to go a tad less than the 30 to something like 25mm if you really wanted to.

[Dnk]

Im pretty sure it will stay on stock suspension, this is on an NA as well incase that makes any differance

 

The tyre sizes will be 225 x 40 x 18 front and 255 x 35 x 18 rear

[dandan]

OK cool - that's a bit skinnier than anything I've used on aftermarket wheels so someone else may be better talking from experience. That said - I reckon you'd have no issues with a 25mm offset front and rear.

[Dnk]

The recomended widths are 225 or 235 front and 255 or 265 rear, i've been searching around and found the ultralite 18 x 8 and 18 x 9.5 both come in 35 offset but its obviously down to how close that puts them to the arches.

 

They need to be close but definitely dont want to roll the arches.

 

Thanks for your input

[Nic]

Perhaps someone with stock 17' wheels/tyres and stock bodied Supra can measure how much clearance there is between the wheel/tyre and wheel arch lip. Then use the Offset Calculator to work out the best offsets. At a guess I'd say it'll be somewhere between +35 - +40.

 

Stock Wheel Sizes/Offsets

17x8 +50 - 235/45R17

17x9.5 +50 - 255/40R17

Edited May 24, 2011 by Nic (see edit history)

[Chris Wilson]

I have 8.00 x 18 +30 rims on my GTS-t with 225 /40/18 tyres, they share the same PCD. We could try them on your car, but I need to check if the spigot hole in my rims is big enough to go on the nose of the Supra hubs, as my wheels are the correct spigot hole diameter for a Skyline hub. I can measure them later if this is of any use?

 

It's got 9.00 x 18 +38 on the rear on 255/35/18 so not much help there without careful measurements being taken.

[Dnk]

Its not my car Chris but thanks for the offer, i think the owners getting his rule out so we'll see what he comes up with

[Samurai 20V]

Perhaps someone with stock 17' wheels/tyres and stock bodied Supra can measure how much clearance there is between the wheel/tyre and wheel arch lip. Then use the Offset Calculator to work out the best offsets. At a guess I'd say it'll be somewhere between +35 - +40.

 

Stock Wheel Sizes/Offsets

17x8 +50 - 235/45R17

17x9.5 +50 - 255/40R17

 

My car has stock wheels and body, but is lowered, I did some measurements this weekend, its seems as though I can accommodate 20mm more at the maximum, so the offsets you listed should be right in the ballpark...

 

Bear in mind this is my car, stock suspension may be a bit different?