I am running 34 psi on all four tires on my 1995 E320 and all four tires wear like there is low air pressure - inside/outside wear faster than the center. Should I try a little higher pressure - like 36 psi or just live with it? 34 psi is higher than what is stated in the gas fill door. Tires are stock size 195/65/15 and I am considering going with 205/60/15 the next time I change them.
thanks

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Jim

the '94 E320 Coupe (93k) is wearing P6000 Summer 195/65/VR15 and using 100mph psi MB recc's from the fuel- filler door;

since the Coupe possess more of a luxo suspension- stiffening the tires up a bit with the 100mph psi spec moves the ride experience closest to my often enthusiastic tastes, provides the least rolling resistance for optimum gas mileage, while not beating up excessively on the other suspension components (acknowledging the stock engineering limits/nature of the vehicle); I'm quite satisfied with the result and this appears to be the most conservative route- absent sportline or non OE/ plus one/ spring pads variants, etc.

...experience has been even wear across all tires x4 on the P6000 Summer - and I'm on my second complete set of P6000 Summer (prior was P600 with even wear as well)

I'm wondering if the uneven wear in your case is due to bushing(s) and/or alignment issue(s) and may be worth checking out...

in any case, whatever psi I've used,- I factor to and trust the MB front-to-rear recc % bias i.e. if it's recc 27psi front/33 psi rear = I'll convert and use a 82% front psi to 100% rear psi bias

good luck and let us know what turns out

-fad

Alignment has been done and all struts/bushings are in good condition.

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Jim

hmm...wider 205's may accentuate the problem

the physical/ mechanical variables (suspension/chassis) that may contribute to this condition are identified and limited so, logically- its will source to one or more components (ie shocks/ springs/bearings/ bushings)...a front end MB pro will be able to track it down quickly and possibly gratis in an estimate

in my experience tire pressure is most likely not the major culprit in uneven tire wear- ...I've run MB recc pressures and 29 psi, 30psi, 32pis, 33psi, 34psi, 35psi, 36psi in the front searching for what is good for me over extended periods- with no uneven front end tire wear on the E320 Coupe over the last 40K miles (city/highway mixed use).

-fad

hmmmmmmm, what I may be seeing is even wear AFTER the edges have already worn faster?? Another thought is the way I have pull into the garage (90 degree turn) I have to back up and turn again. It is easy to see on the concrete where I make the turn the tire mark edges where the tire has turned while not rolling but that would not expect the same type of wear on the rears. I may even go up to 36 and try it for awhile.
thanks

__________________
Jim

engat- if you wish to delve deeper and you have a printout on the alignment specs- Steve Brotherton in the past has been very helpful in this type of analysis

-fad