What Tyresize MPS4s

[Passi-M5]

Hello. I'm currently driving the Pzeros 295 on the 343M rims. I think the tires are average. Sometimes I have grip problems in 3rd gear. I want to buy the MPS4s. What tire size should I drive on the rear axle? 305 or are the 295 enough? The car is and should stay stock

Greetings

[Barry_S]

Originally Posted by Passi-M5

Hello. I'm currently driving the Pzeros 295 on the 343M rims. I think the tires are average. Sometimes I have grip problems in 3rd gear. I want to buy the MPS4s. What tire size should I drive on the rear axle? 305 or are the 295 enough? The car is and should stay stock

Greetings

I just put 305's on today with a 5mm spacer. Looks great and hooks a lot better. Going in for KW HAS tomorrow.

[Dwaynos]

Yeah I run the same as above 305 MPS4s. Much better than the 295 pilot supersports I had on before, which are already better than the pirellis.

[Passi-M5]

Originally Posted by Dwaynos

Yeah I run the same as above 305 MPS4s. Much better than the 295 pilot supersports I had on before, which are already better than the pirellis.

Are your cars stock?

[Dwaynos]

Originally Posted by Passi-M5

Are your cars stock?

I was stock when I got the tyres but now I'm running stage 1 93 octane bm3, struggles with traction again to be honest with a tune.

[Passi-M5]

Originally Posted by Dwaynos

I was stock when I got the tyres but now I'm running stage 1 93 octane bm3, struggles with traction again to be honest with a tune.

Ah ok. when your car was stock did you also have traction problems with the 305?

[Dwaynos]

Originally Posted by Passi-M5

Ah ok. when your car was stock did you also have traction problems with the 305?

Yes but nowhere near as bad. 305 MPS4s will be so much better than your pirellis once they've got a few miles on them.

The only other way to improve traction is to use Toyo R888R but then you're limited to dry weather only.

[Passi-M5]

Originally Posted by Dwaynos

Yes but nowhere near as bad. 305 MPS4s will be so much better than your pirellis once they've got a few miles on them.

The only other way to improve traction is to use Toyo R888R but then you're limited to dry weather only.

my problem is that I don't like the look of the 305. The tire looks too wide to the rim

[Dwaynos]

Originally Posted by Passi-M5

my problem is that I don't like the look of the 305. The tire looks too wide to the rim

Not with the Michelin, its flat and looks just right for the wheel. If you're looking at 305 pirelli tyres then the sidewall bulge is ugly from what I have seen. The 315 Toyo doesn't look great either.

[Passi-M5]

Originally Posted by Dwaynos

Not with the Michelin, its flat and looks just right for the wheel. If you're looking at 305 pirelli tyres then the sidewall bulge is ugly from what I have seen. The 315 Toyo doesn't look great either.

I'm not sure if the 305s are necessary for Stock Power. It's hard for me to choose one.

[Dwaynos]

Originally Posted by Passi-M5

I'm not sure if the 305s are necessary for Stock Power. It's hard for me to choose one.

I'd say they are better than 295s. The only tyre worth buying for daily driving is the Michelin PS4s.

[Passi-M5]

Originally Posted by Dwaynos

I'd say they are better than 295s. The only tyre worth buying for daily driving is the Michelin PS4s.

Anyway, I buy the PS4s. The question is 295 or 305. I still have some time to buy.

[M5Rick]

Originally Posted by Passi-M5

Anyway, I buy the PS4s. The question is 295 or 305. I still have some time to buy.

Do like Dwaynos and myself did,305's with 5mm spacers just on the back for better traction off the line than 295's and as long as crazy bend speed not attempted you'll be happy. Don't forget the longer lug bolts.

[Passi-M5]

Originally Posted by M5theonlyone

Do like Dwaynos and myself did,305's with 5mm spacers just on the back for better traction off the line than 295's and as long as crazy bend speed not attempted you'll be happy. Don't forget the longer lug bolts.

What happens at high cornering speeds? The tire will rub?

[Dwaynos]

Originally Posted by Passi-M5

What happens at high cornering speeds? The tire will rub?

Nothing really, the tyres will not rub unless you're very low and have wide spacers. Some people say that if you go with wider tyres then the car doesn't take the bends as well but I have never noticed any issues, the M5 isn't really a cornering car anyway.

[JimBob0047]

Factory Pirelli were shit! The PS4s is the best tire hands down. I was amazed at the difference in traction after the switch. 305 for the win you won't regret it!

[vafan13]

Originally Posted by Dwaynos

Nothing really, the tyres will not rub unless you're very low and have wide spacers. Some people say that if you go with wider tyres then the car doesn't take the bends as well but I have never noticed any issues, the M5 isn't really a cornering car anyway.

I understand how from a tire/wheel mechanics perspective that would be true, but outside of a racetrack, has anyone actually noticed it with this car when just doing spirited backroads corner carving? Obviously you haven't, and other have said "a wider tire on same rim will affect cornering", but I'm not sure I've seen someone say they went to 305s and could actually notice an impact.