Hi, after trying my 18" Gloss black Zito 935's (F 8.5" & R 9.5" with tyre sizes 225/45 and 255/40) from my E85 on our recently acquired E89, I reverted back to the 326's it came with a few weeks ago for a few reasons.
1, I just wasn't feeling the white car with black wheels look and I just love the look of the 326's on an E89, particularly white E89's.
2, With the Zito's on (with Goodyear F1 tyres with a 5% larger sidewall than standard, 225/45 & 255/40) the car felt over tyred. It would roll more than it does with the 326's and the steering just wasn't anywhere near as responsive. I recently fitted a B12 Kit to the E89 and with this on the car almost felt too comfy on the Zito's for something that claims to be a sports car, the ride was almost saloon car like, which surprised me as I thought the B12 Kit would make the ride harder than the 70K M Sport stuff it came with. The B12 kit did reduce the roll somewhat but probably not to the level of the standard M Sport suspension and 326's with Bridgestone RFT's. I did try the Goodyears with various tyre pressures including the standard quoted RFT pressures and even slightly higher, but I just couldn't get rid of the extra roll, which led me to the conclusion it can only be too much height in the sidewalls.
I've had the 326's on a few weeks now and a trip to the supermarket soon confirmed what I already knew. It handled much better on the 19's with standard tyre sizes, but of course what I didn't like was the bloody RFT tyres.
Which finally leads me on to point of my thread.
I have a bit of a dilemma, my car came with four 8" 326's (4 fronts) instead of 2 9" jobbies at the rear. So keeping the current rear size 255/30 really doesn't fly as they are really are too wide for an 8" wheel. I was initially thinking F 225/35 & R 245/35 but even 245's are about as large as your recommended to go on an 8". So I started thinking about a square set up of 235/35 all round, which seems on the face of it to have a few benefits.
1, The Goodyear F1 Supersports in 235/35 I've been looking at are anything up to £30 cheaper a corner than the 225/245 option.
2, They do increase the sidewall over the superskinny standard setup by F 3mm & R 6 mm which would probably be a good thing, without increase it so much I get the issues I'm having with my other wheels/tyres.
3, Running a square setup should in theory reduce the car's understeer.
The only real draw back I can see is that running a 235 at the rear won't look too good aesthetically and might not be able to handle the car's power/torque especially if its remapped to something close to 280 Bhp, which is the plan. That said there's plenty of M135i etc running anything up to 400 BHP on 245's at the rear, so its probably not too much of an issue.
Thoughts anyone?
1, I just wasn't feeling the white car with black wheels look and I just love the look of the 326's on an E89, particularly white E89's.
2, With the Zito's on (with Goodyear F1 tyres with a 5% larger sidewall than standard, 225/45 & 255/40) the car felt over tyred. It would roll more than it does with the 326's and the steering just wasn't anywhere near as responsive. I recently fitted a B12 Kit to the E89 and with this on the car almost felt too comfy on the Zito's for something that claims to be a sports car, the ride was almost saloon car like, which surprised me as I thought the B12 Kit would make the ride harder than the 70K M Sport stuff it came with. The B12 kit did reduce the roll somewhat but probably not to the level of the standard M Sport suspension and 326's with Bridgestone RFT's. I did try the Goodyears with various tyre pressures including the standard quoted RFT pressures and even slightly higher, but I just couldn't get rid of the extra roll, which led me to the conclusion it can only be too much height in the sidewalls.
I've had the 326's on a few weeks now and a trip to the supermarket soon confirmed what I already knew. It handled much better on the 19's with standard tyre sizes, but of course what I didn't like was the bloody RFT tyres.
Which finally leads me on to point of my thread.

I have a bit of a dilemma, my car came with four 8" 326's (4 fronts) instead of 2 9" jobbies at the rear. So keeping the current rear size 255/30 really doesn't fly as they are really are too wide for an 8" wheel. I was initially thinking F 225/35 & R 245/35 but even 245's are about as large as your recommended to go on an 8". So I started thinking about a square set up of 235/35 all round, which seems on the face of it to have a few benefits.
1, The Goodyear F1 Supersports in 235/35 I've been looking at are anything up to £30 cheaper a corner than the 225/245 option.
2, They do increase the sidewall over the superskinny standard setup by F 3mm & R 6 mm which would probably be a good thing, without increase it so much I get the issues I'm having with my other wheels/tyres.
3, Running a square setup should in theory reduce the car's understeer.
The only real draw back I can see is that running a 235 at the rear won't look too good aesthetically and might not be able to handle the car's power/torque especially if its remapped to something close to 280 Bhp, which is the plan. That said there's plenty of M135i etc running anything up to 400 BHP on 245's at the rear, so its probably not too much of an issue.
Thoughts anyone?