Brakes/Braking

[gslrallysport]

A lot of that is the fact that they've got a higher metallic to organic ratio in their compound than most other pads. Which means they work really well, don't dust, but can require a good bit of heat to get the to bed in properly...

[JR]

225/45/17 will fit on the TS SRi-T. I use them on the track.

Though I am going to 235/40/17's next time...

there was a discussion about this last year or something - the general consensus was that "225" would scrub at the back, especially if the car is lowered. the bit where the rear bumper bar joins with the bodywork, above the rear wheel. its a lip on the inside wall, at that location.

also "225/45/17" is not the correct rolling diameter for the ts astra. its too "big"

Specification_Sidewall_Radius__Diameter_Circumfere nce_Revs/km_Difference
215/40-17____86mm__302mm__604mm__1897mm______527_____0.0%
225/45-17____101mm_317mm__634mm__1993mm______502_____5.1%

as u can c above, that's gonna make a significant difference in ur speedo calibration.
also the reason why the dude at tyre shop said no to me when i asked for 225/45/17s.
hence the reason why the turbos come with 215/40/17s as factory stock.


235/40/17s on the otherhand, is a close match. but it would b wider. unless ofcourse u roll the lips.
Specification_Sidewall_Radius__Diameter_Circumfere nce_Revs/km_Difference
215/40-17___86mm___302mm__604mm___1897mm______527_____0.0 %
235/40-17___94mm___310mm__620mm___1947mm______514_____2.6 %

[gman]

My 225/45's which are the Kumho V70A Semi Slicks only ever touched on the front passenger guard once at the track and that was a very exceptional circumstance (read moderately serious, very high speed off circuit excursion).

Never had the rears rub at all and my car is lowered on Bilstein coilovers...Then again if its too low it will always rub...

The 235's are marginally wider overall, but it also depends on the actual tyre too as to how much wider and taller the tyre is...Every manufacturer's interpretation of sizing is a little different...

Currently the Falken Azenis RT-615's in a 215 are great for the road and never rub.