ecohen2

During last fall I replaced my stock tires on my 504 edition with some Toyo Proxy Plus all seasons. The tires are great, but now that it is spring I see the tire pressure going up above 50 PSI, which is the max rating on the sidewall.

I went to the Toyo site and plugged in the information for my car: http://tirefinder.toyotires.com/?vid=52582

If you look at the pressure for the 507 Edition, they say 42 front and 46 rear. I haven't tried this yet, but it would definitely get the front pressure below 50 PSI and the rear considerably higher than the stock PSI.

So the question is, do people go with the tire manufacture recommended pressure for the car or do they stick the the MB recommended pressure for the car?

Ed

rickclass

Stefj

I use 42 front and 42 rear
when I race on a track I use 39-39
drag 42 - 35


dosnt matter you don't need to be as the spec. it depend of what you do with it

rediesel

IMO the MB recomendation is probably only useful when using stock sizes of mercedes labeled (OEM) tires. A different model tire, even in the same size has different properties and may require more or less pressure to acheive optimal grip. What is considered optimal grip is also dependent on what you are doing (drag racing, autocross, road racing, mud bogging).

Also I'm not sure how much the MB recomendation is designed for optimal grip vs fuel economy vs best ride, or the best comprimise of these.

Bottom line it's up to the driver to determine what the optimal pressure is to run in their tires.

dfabricant

There are many threads on this. I keep mine at 40 all the way around.