[ajgranda]

Hi, I always kept the tires on my A4 2-3 psi over recommendation (10 yrs) and they and and wore well. In the winter snow I kept them to specs. What about the MB C300 Sport?

 

[Sportstick]

You probably know you'll "feel" the road imperfections a bit more, and perhaps have slightly faster wear at the middle of the tread. On the other hand, it will help protect your rims from pot hole damage, and increase steering response feel. It also raises the speed at which you will hydroplane in the rain (square root of the tire pressure x 10 is a rough formula). For just 2 lbs. none of these changes will be significant, as the tires would vary 2 lbs anyway with a 20 degree F change in ambient conditions. If this makes you more comfortable, no major reason not to go for it.

 

[ajgranda]

Thanks!

 

[William Alexander]

Have had no extra center tread wear keeping 3-4 lbs extra in Michellin Primacy HP's. Feel that it keeps more potholes from damaging the sidewall or reaching the rim. Highly recommended in regions where the road surface is poor, especially in the spring where potholes appear after winter thaws but havent been repaired yet.

 

[air4matic]

You get more grip with higher PSI up to a certain point.

 

[ajgranda]

Thanks guys, I'm keeping my tire pressure at 32psi front and 37psi rear for the C300 4 matic sport. Yes, slightly more road imperfections felt (had a Audi A4 with sport package, so no difference with that), but better handling, maybe better gas mileage and less rolling resistance IMHO. Car actually feels peppier (probably more psychological though). Also as stated it raises my rims (ever so slightly). The on board monitoring system on the car is not the most accurate and I used a digital gauge and Black and Decker compression pump (don't ever use the pump gauge though).