I had owned a MY99 UK Turbo for several years, but recently changed to an STI8 PPP. Whilst the car is great overall, it does appear to suffer from a significant amount of tramlining, something I never noticed in my MY99.

The old car was also running on 17" wheels (7J), as opposed to 17" (7.5J) on the new car, but I am still surprised at the difference.

Is this something anyone else has noticed, or could there be some other underlying reason for this ?

 

Ah, simple one this
Its down to 2 reasons, the first is that the tyres are wider, so you will tramline slightly more, the second is the fact that those Bridgestones do tramline, as do most Bridgestone tyres ive found out (RE040's, SO2 PP's, but not that badly, and RE070's).

Tony

 

My MY03 STi PPP with 18'' PFF7's and Pirelli PZero Neros tramlined badly when the tyres were new. After 10K and a couple of half days at the track theyre now much better. Are your tyres new? Maybe they'll bed in with a bit of wear. Geometry check may also be prudent.

 

No probs on mine but they're 18s on Goodyear GSD3s.

The bridgestones on my old one used to tramline especially when over two thirds worn. Could be tyre characteristic or tracking.

JB

Doh, where did those two replies jump out from?

 

Thanks for the responses. It is still the standard Bridgestones that are fitted at the moment. They currently have just over 6,000 miles of wear on them.

Any recommendations for a tyre that doesn't suffer this trait so badly will be gratefully received.

 

I blame the patchwork roads for this. Have you noticed how sweet a new piece of billiard smooth tarmac feels, endless grip and no tramlining! Anything over a 215 width is bound to tramline, but what fun going round the twisty stuff:-)

 

True to a certain extent Joe, but some tyres are worse than others. Bridgestone's don't seem to be great and P Zeros are awful. I had 18" P Zeros on my MY01 and the car was undrivable after 10000 miles.

Get a decent set of tyres (Goodyear F1s are the best tyres I've fitted in 5 years of Scoob ownership) and then have the geometry and tracking sorted out (have you noticed if there is uneven wear on the tyres - possibly the inside edges wearing?). Go to someone respected for this - like Powerstation. Well worth the money and it will transform your car.

 

[QUOTE=Chris L]....I had 18" P Zeros on my MY01 and the car was undrivable after 10000 miles......QUOTE]

Hmm! Mine have definitly got better. There's 4mm left on them now. Should I expect tramlining to get worse from now on?

 

The RE070s tramline like a bitch excellent fun tho

 

I used to suffer the same on my 02STi. It got less when I had the equivalent of PPP fitted, even less after suspension mods and wheel alignment at Powerstation and is now non existent after fitting 18" PFF7 wheels and PZero Nero tyres (as recommended by Mike Wood of Prodrive) currently with 5000 miles wear.

Alan

 

I do think that tramlining is a by product of stiff sidewalls, my RE040 tramline abit on the scoob and did to a greater extent my civic type r.
I personally prefer stiff tyres like the RE040's, for the better steering feel and can put up with abit of tramlining on truck rutted worn roads.

F1’s and the like with very soft sidewalls may give a softer ride with less tramlining, but my personal preference is steering feedback and sharp handling.

Dipster