Tyres for 108's

Alloy wheels and tyre discussion
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bearded_ed
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Tyres for 108's

Post by bearded_ed » Thu Jul 11, 2019 10:19 pm

Hiya

I'm shortly going to be picking up my 04 3.0i and think I have already felt the tramlining on my test drives!

Obviously I'll need to drive the car a fair bit to get used to it, it's my first quick car. (90bhp '15 Corsa right now!).

I noticed the tyres on the car I'm getting are Pozentas on the front and Pilot Sport 3s on the back. Other than that I forgot to properly check sizes and exactly what model they are but I'm assuming RunFlats. I've attached a picture that I took.

Anyway, assuming they're RF what size tyres should I look for? I know they are different fronts and rears.

EDIT! I've just found the sticky post about sizes.

So.... What do I do about tramlining... Wear these tyres out or can it be fixed with suspension bushes a bit?
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IMG_20190709_165602.jpg
IMG_20190709_165602.jpg (170.88 KiB) Viewed 180 times
'04 Sterling Grey E85 3.0i Manual.

Mr Tidy
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Tyres for 108's

Post by Mr Tidy » Thu Jul 11, 2019 11:14 pm

The OEM sizes for 108s were 225/40 x 18 on the front and 255/35 x 18 on the rear as the rims are staggered (8J on the front and 8.5J on the rear).

If you have Bridgestone Potenzas on the front I would guess they are probably run-flats, but they'll have a marking on them to tell you (RSC I think). I don't know about the Michelin PS3s, but I think they only came as non run-flats so what you have isn't ideal!

Most people on here recommend fitting non run-flats, which often helps cure the tramlining although I haven't done it yet.

I suppose you either put up with it and wear the Potenzas out, or swap them and see how it feels after that before getting too involved in a suspension refresh.
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bearded_ed
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Tyres for 108's

Post by bearded_ed » Fri Jul 12, 2019 6:51 am

Mr Tidy wrote:
Thu Jul 11, 2019 11:14 pm
The OEM sizes for 108s were 225/40 x 18 on the front and 255/35 x 18 on the rear as the rims are staggered (8J on the front and 8.5J on the rear).

If you have Bridgestone Potenzas on the front I would guess they are probably run-flats, but they'll have a marking on them to tell you (RSC I think). I don't know about the Michelin PS3s, but I think they only came as non run-flats so what you have isn't ideal!

Most people on here recommend fitting non run-flats, which often helps cure the tramlining although I haven't done it yet.

I suppose you either put up with it and wear the Potenzas out, or swap them and see how it feels after that before getting too involved in a suspension refresh.
I just managed to find a definitive answer on the PS3s being Run flat or not.... Sadly yes they are, designated by "ZP" on the sidewall.

Looks like I'll have to put up with it for a bit and try and sell the PS3s at least and go for something else if I find the tramlining a big issue.
'04 Sterling Grey E85 3.0i Manual.

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