lemmbitd

Hi,

Although there has been tons of discussion about this, I couldnīt find an answer to the following question:

How to determine suitable tyre pressures for E55 AMG (W211) running on aftermarket rims and tyres?

I am running on 245/35/19 PSSī in the front and 275/30/19 GY Eagle F1 Asymmetric 2īs in the back.

As far as I am aware, the gas cap states that ca 35 psi is fine (@stock rims and tyres). That said, surely the optimal tyre pressures should be different when using aftermarket rims and tyres?

Cheers,

Lembit

03svtkiller

its the same pressure aftermarket wheels or not, or you can go by what you like your pressure to be at.

Ls1toAMG

Tires should have it on there too. Some people run a few less pounds in the rears for better traction.

HeissRod

Negative. Air volume changes with wheel & tire sizes, but air pressure does not. You should run whatever pressure your tire label on the car says to use. In our case, the label reads...

Up to 100mph 35F / 35R
Over 100mph 38F / 42R

Absolutely incorrect. Tires list maximum recommended pressures, not vehicle specific recommended pressures.

lemmbitd

Thanks for the swift replies. The tyres only have maximum pressures marked on them.

So I guess starting off at 35 psi and then changing them gradually will be the only way to find out which pressures work the best for my car?

I was just hoping that there was some kind of a foolproof method besides using the OEM recommendations. Wouldnīt want to take them too high or low regardless of how the car seems to react since having a blowout at 100 mph plus would be uncomfortable.

(wrote this just after the last reply)

Anyway, it seems that my question has been answered. Its wise to stick to the OEM recommendations. Period.

HeissRod

+/- 5psi is not going to be unsafe.

I've found that the 38/42 combo works well for my setup and ride quality, just not for stoplight traction.