I have a 95 E320 wagon with alloy wheels. The tires I have (205/60r 15 91v) do not match the recomended tire size listed on the door frame....maybe because I have a the alloy wheels. Anyhow, this is the tire size that came with the care when I bought it.

Regardiing tire pressure, do I follow what's listed on the vehicle door frame 29 psi front....32-38 rear? or do I follow what is listed for the tire?

The front tires look like they could use a little more air at 29 psi but the car drives fine? Just considering putting more air in the tires to possible improve gas mileage for a long trip I have coming up.

What's listed on the tire sidewall is the MAX recommend inflation for that tire. Try 35psi front & rear then experiment a few psi more or less to see what's more economical and ride-worthy. My W8 had 2 pressure listings, the second for "sustained high speeds" of 39F / 36 rear. I ran them at 41 & 38 and they were non-stock size as well. OE was 225/45R17. I was running 235/40R18's.

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Sharing my partner's 2012 Forte 5dr SX til I find my next 123 or 126..
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Do I miss being a service advisor ???

rule of thumb would be follow the vehicle manufacturers recommendation since they are based on the vehicles weight. With that said you need to understand that those recommendations are a compromise between performance and comfort and are skewed more towards ride comfort. I, for one, am more concerned with performance than ride comfort so, I tend to bump the pressures up a bit

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