Biggest tires on zcp

RenoE92M3 wrote

I tried 255 and 295 before this setup. I can tell you the car feels much more planted with these tires in this size. Like I said I will get the pic next week the side walls aren't bulged just square I love it.

I also greatly prefer the feel of 275's in the front and 285's or larger in the rear but... on wider wheels.

Strictly for an autocross set-up, wouldn't you want as much tire as possible - if you are using ZCP GTS wheels for argument sake.

305 on stock zcp wheel is kinda LOL..

dex37 wrote

The M3 GTS runs 255/35 and 285/30. I wouldn't go wider. You can also fit 295 at the back.

guys thanks for the advice, think this is the winner

yoelev wrote

guys thanks for the advice, think this is the winner

Now you need to decide which tire you want... That size may work but Michelin PSS are not available in 285/30/19. That is one of the reasons that I recommended 255/35/19 and 275/35/19 combo. I would go with Michelin PSS for street only use and Yokohama ad08r for street/track. Neither of which are available in 285/30/19.

I am running the new Toyo Proxes T1 Sport in the GTS sizes and I ran the Continental 5Ps in the GTS sizes both are an excellent alternative to the Mich PSS which I waited in vain for.

The Conti 5Ps I felt were as good and in some tests a tad better than the PSS, also more expensive.

The Toyo T1 Sports have a real nice stiff sidewall and excellent grip. Not bad for the price.

Dave

NELSON.MLGB wrote

305 on stock zcp wheel is kinda LOL..

Just kind of LOL...I was like

slicer wrote

Now you need to decide which tire you want... That size may work but Michelin PSS are not available in 285/30/19. That is one of the reasons that I recommended 255/35/19 and 275/35/19 combo. I would go with Michelin PSS for street only use and Yokohama ad08r for street/track. Neither of which are available in 285/30/19.

the potenzas should be fantastic. have always loved the bridgestone brand

dex37 wrote

The M3 GTS runs 255/35 and 285/30. I wouldn't go wider. You can also fit 295 at the back.

Could you run 265 or 275 up front with 285/30 rear to help with the balance? 255/35 seems kinda narrow.

Millie wrote

Could you run 265 or 275 up front with 285/30 rear to help with the balance? 255/35 seems kinda narrow.

I run 265/30 in front. A lot have said you can run 275/30 in front.

With 265/30s, my sidewalls are nicely squared up with the rims. I am fairly certain with 275s, you will see a little muffin top.

M3 Pilot wrote

I run 265/30 in front. A lot have said you can run 275/30 in front.

With 265/30s, my sidewalls are nicely squared up with the rims. I am fairly certain with 275s, you will see a little muffin top.

I see. I'll probably run 265/30 front and 295/30 rear AD08R since they run a little wide anyways.

OK, I have a question, hopefully some members with experience can clue me in

I bought an M3 that had AG M359s on it which I really like. Currently, it has OEM sized PS2 tires on it and runs a 12.5mm turner spacer in the rear (ET25 without spacer, same as OEM ZCP).

My question is, how much tire can I fit without rubbing in the back? I plan to track the car about 6x per year as well as DD the car, so I prefer to run extreme summer tires.

My options as I see them are

RE11 in stock sizes
AD08R in 255/275 (would really like to try this if I can fit it)

The car is on OEM ZCP suspension. Thank you for any feedback.

265/30 in front, 285/30 in rear. Perfect fit, stagger, grip, and appearance.

OP: what makes you think you need wider tires? Or is this purely for aesthetics?

Millie wrote

Could you run 265 or 275 up front with 285/30 rear to help with the balance? 255/35 seems kinda narrow.

It depends on the wheel you have. On stock 9in ZCP wheel, I wouldn't put a tire wider than 255. Especially the AD08 run much wider than a PSS or PS2 for example.

Autocrossers stuff as wide a tire they can on any rim. This is not new, and it produces faster times at the expense of turn in and 'feel'.

I wouldn't recommend that type of setup for the street though. You don't need that much tire for the street.

dex37 wrote

It depends on the wheel you have. On stock 9in ZCP wheel, I wouldn't put a tire wider than 255. Especially the AD08 run much wider than a PSS or PS2 for example.

Ya AD08's do run pretty wide. I'll just go with 255/275 add some spacers and do the stud conversion.

265/30 and 275/30 is my current setup. Track testing is slotted for next month.


Allen

Those sizes are not a full half inch stagger front to rear so the car might think the rear is going faster than the front and intervene with dtc. Dynamic tractuon control.

DTC gets turned off at the track. Coming from a 255/30 and 275/30 combo that felt good. Curious to feel the wider front with my driving style.


Allen

KennyPowers wrote

OK, I have a question, hopefully some members with experience can clue me in

I bought an M3 that had AG M359s on it which I really like. Currently, it has OEM sized PS2 tires on it and runs a 12.5mm turner spacer in the rear (ET25 without spacer, same as OEM ZCP).

My question is, how much tire can I fit without rubbing in the back? I plan to track the car about 6x per year as well as DD the car, so I prefer to run extreme summer tires.

My options as I see them are

RE11 in stock sizes
AD08R in 255/275 (would really like to try this if I can fit it)

The car is on OEM ZCP suspension. Thank you for any feedback.

It could possibly rub with the 12.5mm spacers. There isnt much room with my 285s out back and no spacers. You could be right on the edge with the 275s. I think it will work with the 275s. Let us know..

NELSON.MLGB wrote

305 on stock zcp wheel is kinda LOL..

Whats wrong with 275's and 305's lol?