DSDP Don,
I thank you for your response and fully understand what you say. However I don't think you really understand my predicament.
1. The Coach is a 1992 Gulf-Stream, spring suspension without ride height adjusters.
Since I have had the coach, I have had the steering checked and aligned according to Spartan specifications, I have new shocks all round (Monroe Magnum) I have installed Safe T plus steering bar and rear anti sway bar stabilizer. Although Wandering has decreased I still get pushed around by the wind on the freeway not so much by passing vehicles. On reading the forums I find miss leading information and contradictory posts which do not help.. I have talked to 3 different "Experts" and been given 3 different answers.
One tech say's I can't do anything its the nature of the beast.
2nd tech says add a Henderson Track Bar and up grade tires from the Sampson 8R 19.5's to 225/70 19.5. When asked about width his reply was as I stated, the wider tire will give a good seal on thre rim and the tire pressure will hold the tire walls stable.
3rd tech says the tire size is the problem, but to increase the size will result in Rubbing and Higher MPG. To replace the tires and wheels alone is approx $7000.
Dually tires are secured by studs and lug nuts and do not revolve separately, so there is no friction generated between the tires. Please note the wheel size would still be 19.5 ! Inaccurate speedometer wouldn't be a factor if I only do the front wheels. And my MPG averages 9.23 (pen and paper) that was achieved recently in the White Mountains of AZ with grades or 6 and 7 % towing a tow dolly with Chevy Equinox at an average speed of 55 mph.
I know a lot of people would say trade the coach, but this coach is in excellent condition and has only done 126000 miles on a Cummins 5.9 with a AT 542 Allison transmission which the previous owner had rebuilt less than 1000 miles / 9 months ago. The only problem is the wandering. When we bought the MH we new we would have to put some money into it, but we need to know where the money should be spent to correct the wandering.
As to braking, I understand your points however I have to say what stops the vehicle is the friction between the road surface and the tires. Therefore the wider the tire the more area is in contact with the road giving better braking. I also realise weight and speed plus road surface makes a differance and taking into account manufactures specifications leaves a contradicting circle of what to do to fix the problem.
I have read comments about Monroe Shocks, but I think it is a personal preference, any new shock replacing a bad one will cause the user to think the replacement is the best. Monroe use these shocks on their Bajo race cars, so they can't be that bad..
I appreciate your help Don Thank You
