I've noticed this in other vehicles I have driven, which made it seem normal and thus not needing attention, but now that I've temporarily switched to coils, and my attention is free to roam to other areas of the truck, maybe someone could offer some advice on this. Whenever I go over a speed bump(the short curb-like ones) the front end handles normally, but when its the rear end's turn to finish, it feels like its jumping down, and I feel and hear the clunk. I'm 99% sure it did this with the airsprings too(I'm unsure because the last couple months were spent driving around on basically the bumpstops, and it ALWAYS did it then ). The springs are fine, except the upper rear springs aren't fixed to the chassis. I find it hard to believe the chassis is coming away from the springs, because the speed bumps are only 2 or so inches tall, and yet the springs are compressed much more than that. The shocks are the original ones from 10 years ago, and need replacing, but they are bolted down tight. The only other thing I can think of is the control arms, but I couldn't find a grease fitting, and not surprised because I think the workshop manual says they are "sealed for life." Any ideas on the problem, if there is one at all?
Also, unrelated, I've been looking online for info about tire and wheel sizes and compatibility, but haven't been able to find what I'm looking for; tire manufactures provide specs on their individual tire sizes, like overall diameter, weight, load, etc. When they mention section width, they provide the width of the rim it was mounted on. for example, 33x12.5r18, 12.5 section width on a 10" wide rim. Is that the minimum width for that tire size, or is it a middle ground size, or recommended size? I'm looking for a 33x tire to throw on my original 18x8 Proline wheels, which have a range of 7-9 inch tire width. Anyone have any info or know a source to find it?
Thanks
Also, unrelated, I've been looking online for info about tire and wheel sizes and compatibility, but haven't been able to find what I'm looking for; tire manufactures provide specs on their individual tire sizes, like overall diameter, weight, load, etc. When they mention section width, they provide the width of the rim it was mounted on. for example, 33x12.5r18, 12.5 section width on a 10" wide rim. Is that the minimum width for that tire size, or is it a middle ground size, or recommended size? I'm looking for a 33x tire to throw on my original 18x8 Proline wheels, which have a range of 7-9 inch tire width. Anyone have any info or know a source to find it?
Thanks