Tire pressure
My 2000 adventurer door plate says tire pressure should be at 70lbs PSI. The tires say 110 max PSI. Any opinions on what is good pressure? We spend alot of time on highways getting from site to site.
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pecooper wrote:
My 2000 adventurer door plate says tire pressure should be at 70lbs PSI. The tires say 110 max PSI. Any opinions on what is good pressure? We spend alot of time on highways getting from site to site.
you should inflate your tires to the maximum pressure for the load being carried. load up your coach the way you normally would for travel...including pets and people...and get it weighed...4 corner weights is best but at a minimum it should be individual axle weights. once you have the axle weights consult the tire inflation guide for your make/model of tires and inflate accordingly. you can inflate beyond the recommended inflation all the way up to the maximum inflation shown on the tire but that will make for a rough ride and may cause handling and braking issues.
we have the same exact chassis as you do (2000 suncruiser 35U) and it has the same 70-psi notation. after weighing our rig we inflate all 6-tires to 85-psi.- Three sources of "correct PSI" (I use the term correct loosely).
The sidewall of the tire, as stated above is for carrying the maximum load (also on the sidewall)
The PSI on the GVWR sticker which is the correct PSI FOR THE OE TIRE if each axle is loaded to its GAWR.
The "real" correct PSI is to weight it and use your tire manufacturers inflation table to determine the correct minimum PSI (that is what the chart shows). Add 5-10 PSI to that minimum for those times all tanks are full, BIG shopping trip to Walmart, etc. naturist wrote:
The max rating on the tire is the pressure you need when the tire is bearing that maximum weight, also marked on the sidewall. If that pressure were also the pressure indicated on the vehicle plate, it would mean that the tires are actually at their limits, and really should be replaced with heftier ones.
Take the total gross weight of the rig plus fuel, water, and all other cargo (preferably determined by weighing it when loaded up for travel) and divide by the number of tires. That weight should be UNDER the sum of the maximum weights on those tires. Otherwise you are in trouble.
The max pressure on the sidewalls should never be needed in real life. If you put that much pressure in 'em anyway and you aren't also loading that weight, you will have a much rougher ride than you should, and will wear out the tire treads unevenly, not to mention suffer poorer braking/cornering.
x2 and the higher pressure greatly affected the handling (made much worse)
Ken- The max rating on the tire is the pressure you need when the tire is bearing that maximum weight, also marked on the sidewall. If that pressure were also the pressure indicated on the vehicle plate, it would mean that the tires are actually at their limits, and really should be replaced with heftier ones.
Take the total gross weight of the rig plus fuel, water, and all other cargo (preferably determined by weighing it when loaded up for travel) and divide by the number of tires. That weight should be UNDER the sum of the maximum weights on those tires. Otherwise you are in trouble.
The max pressure on the sidewalls should never be needed in real life. If you put that much pressure in 'em anyway and you aren't also loading that weight, you will have a much rougher ride than you should, and will wear out the tire treads unevenly, not to mention suffer poorer braking/cornering.
