I am leasing my new Jeep Grand Cherokee and I am wondering what is the recommended tire pressure for the base Laredo 17 inch tires? I am trying to figure out what would work the best so I do not have to buy new tires before the lease is up. (sorry if this is a stupid question.)
I know I can look in the manual and see what Jeep recommends but I know that what the company recommends is not always best.
I agree with MSWLOGO...also keep the tires balanced and rotated every 5,000 to 6,000 miles and they will wear more evenly last much longer. If you hit a pot-hole or something hard on the road watch the alignment it may need checked especally if the tire are wearing on the inside or outside on the fronts. I personally would go with about 2-3psi above the door jamb...especially in the winter as the psi drops about 1psi per 10 degrees colder. Overall if you keep them aired up and rotated they will last the life of your lease.
I run at recommended (door jam) pressure or 1 more lb. in 3 seasons. In winter I run 2 - 3 pounds over so they don't get too low during 0F to 32F (or below) temperatures.
Stick with the recommended pressures. More often than not, the manufacturer DOES know what they are talking about. If you tow a decent load bump the rear 3 psi pr so.
I currently have mine at 37psi (even though I thought I put 38) according to my TPMS because my old car had 16 inch tires and I had 36psi so I figured 38psi would be fine because 33psi seems way too low for a 17inch tire.
I live in a fairly moderate climate (Oregon) where temps seldom get below freezing, occasionally as low as the 20's. And although I do keep some winter goodies in the GC (cables, little food and water, some additional warming gear and so forth), I forgot about what low temps mean for tire pressures on a recent trip to West Yellowstone in mid December. First morning their it was -9 and although the remote start had warmed up the interior nicely the tire pressure had dropped to well below where the tpms wanted it to be. All four tires were at 36-37 psi when we left Portland, but were now at 26-28. PV=nRT (ideal gas law for those of you wondering) works in Montana too. A quick trip to the filling station and all was better of course. Had to air back down once we hit the road back to Oregon. GC was great in the snow. Snow mode worked well with the 6+ inches that were on the ground a couple of mornings. And the packed snow that covered most of the streets were fine too. Just have to remember that its not starting but stopping that is the larger challenge. Great winter trip though. Highly recommend it to anyone with a GC and a lot of warm clothes.
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