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Archive for March, 2009
Tire cupping 1
Posted by James from Pineville, LA, VI on March 31, 2009
I have a 40′ class A motorhome with 6 G670 Goodyear 22.5″ tires. The two front tires are cupping on the outer tread, worse on passenger side. I have about 18,000 miles on them. Cupping started immediately on passenger side and at about 17,000 miles on driver’s side. Would one of the on-board balancing systems, such as BALANCE MASTERS, or CENTRAMATIC makes, be expected to remedy this problem? The motor home is less than 2 years old and was purchased new. Chassis is Roadmasted by Holiday Rambler-gone belly up so no warranty as far as I know.
These balancing systems may help your cupping issue. I suggest moving the steer tires to a drive position and move a couple drive tires up to the steer axle. The worn tires on the steer axle should wear smoothly for the rest of their treadlife and the tires you move back to drive might "clean up" over time.
WIDEBASE TIRES
Posted by Robert from Beavercreek, OH, US on March 16, 2009
id like to have your input on widebase tires vs.duals thankyou RE Phillips
The numbers will be different for everyone but here are the tradeoffs? Weight savings - can be over 1000 lbs per vehicle for wide base tires on aluminum rims if you currrently run dual tires on steel wheels. Obviously, the weight savings is not as much if you are already on aluminum rims. Cost - tire costs will vary greatly depending on what tires are purchased, use of retreads, size of fleet, etc. Treadlife - so far the trend is for wide base tires to wear faster than dual tires in a similar situation. But, the treadwear rates for the wide base tires are improving with each new design. Fuel usage - lower rolling resistance with improved fuel economy is one of the often touted features of wide base tires. Compared to a vehicle on conventional duals, the wide base tire do have an advantage but, there are fuel efficent, dual tire combinations available that are comparable in fuel mileage. Check out the Goodyear Fuel Max tires
Tire Comfort
Posted by larry from short hills, NJ, US on March 9, 2009
I have a set of tires that now has 35,000 miles on them. The tread life left on them has an astonishing 75 to 80% left on the tire. That’s the good side. On the downside, the comfort level went from very smooth to incredibly hard rough ride. Because of the amount of wear that I can get from them, I am very reluctant to buy new ones.
The question is, what are the factors that make a tire have a smooth comfortable ride vs other factors taken into consideration so that I may know what to look for in the future?
thanks
I find it difficult to believe that the ride comfort of your vehicle could be negatively affected by a loss of 20% to 25% of the tread from your tires. It could be argued that the deeper the tread, the more the ride is cushioned. Consider that imput from the road surface transfers through the sidewall of the tire to the suspension (springs and shocks) then through the seat of your vehicle and finally to your backside. I would bet there is something else affecting your ride other than treadwear.
Casing Life
Posted by Ron from Las Vegas, NV, US on March 7, 2009
I have Goodyear G670RV tires on my motor home. They were manufactured in 2003 but only have 9600 miles on them.
Are they safe to drive on?
Thanks,
If tires have been properly maintained, age may not be a factor. With only 9600 miles on them, I assume there is plenty of tread left. If you don't feel comfortable inspecting the tires for objects (nails, screws, etc.) and looking over the sidewalls for weathering, take your motorhome to a tire professional in your area. Weathering would be evident if there are a series of hairline cracks on the sidewall. As long as the tires pass inspection, 6 year old tires should be fine.
Steer Tire Rotation
Posted by Diane from Canton, OH, US on March 5, 2009
Straight truck with cupping on the inside tread of the driver side steer tire ~~ if steers are rotated and direction of rotation changed, will this cause any type of issue? (With rotation of tires and direction rotation changed, driver side inside tread becomes outside tread of passenger steer.)
Rotating the tires from side to side to reverse the direction of rotation is very common. This will tend to even out some types of irregular wear. I see no potential probems with this.