Quote:
Originally Posted by PopBeavers
Just a clarification on my previous comment.
It was my TV tire pressure that was low. That allowed too much flex, thus the bouncing.
I would try maxing out the rated pressure for the TM tires (should be 50) and at least the rear of the TV. I'm not sure how much bounce would occur from under inflated front tires but I would guess that the TV rear tires are much more critical.
Car manufactures are sometimes accused of specifying too low of a tire pressure on the door. The claim is that they write the spec for a soft comfortable ride. Check the rating on the sidewall of the TV tires. Probably higher than what the label in the TV door says.
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In fact, if one uses the max pressure indicated on the tires sidewall the following benefits will be realized:
1. Delayed onset of hydroplaning. Hydroplaning speed is, by rule of thumb, 9 x Sqrt of tire press. At 32 psi; 9 x Sqrt 32 = 51 mph. At 60 psi, 9 x sqrt 60 = 70 mph.
2. Handling improves. Less understeer; i.e., greater control.
3. [Errata...Braking degraded. Smaller tire surface area in contact with the road.]
Braking is NOT degraded. My original sources were in error; therefore am I. Braking performance is
better, wet and dry, at higher tire pressures. Here's a link:
http://www.nhtsa.dot.gov/cars/rules/...FEA/TPMS3.html
Scroll to charts at end of the long dissertation.
4. Stiffer sidewalls means less flexing, thus reduced heat generation. Tires will last longer.
5. Inproved fuel efficiency (reduced rolling resistance).
I infate my Prius tires to 44 front and 42 psi rear. Sidewall has 44 psi max stamped on it!
So, there is no downside to running with the highest allowable tire pressure (unless your false teeth aren't tightly fixed
)! If the rear tire pressures are increased, the front should also be increased. Otherwise a handling problem can develop. Front understeering while rear tires provide greater traction. Also a braking inbalance when the front dives, transferring wt fwd, during hard braking.
Denny_A