Vibration / shudder at various speeds
We recently bought a 1999 Jayco Eagle Class C, 24', 24, 000 miles and well kept, through a private sale, with near - new Toyo Tires. We noticed a shudder while driving but assumed it was due to sitting over the winter months at the previous owner's home creating a possible flat spot on one or more of the tires. The previous owner agreed it must be from that as it wasn't there before. This is what we did to try to resolve the problem:
Front tires are LT 225/75R/16 M&S (E)
Back tires are LT 215/85R/16 M&S (E4) (why different in size/E rating from front???)
1) Had tires re-balanced, shudder changed to slower speeds where it was higher speeds before
2) Travelled 200 miles to try to get wheels to round again ( if it was from sitting over the winter) no improvement
3) Took vehicle in again for balancing adjustment - no improvement and was told it was cheap Toyo tires (tire place didn't sell Toyos and recommended Michelins but we figure that was to drum up business). They said they had done all they could to fix the shudder. They have a good name as a local business - not a fly-by night type of business.
Any suggestions as to what to try next???? We thought we would try a place that sells Toyo but not sure what else they could do anyway. Sadly, no receipt kept for tires as the Mo-ho was the previous owner's mothers and she was elderly and didn't keep receipts. Your ideas/experiences would be most welcomed.