Re: Just want to know about Toyo M170 & M177
Reply #77 –
Times change and the original unihomes were designed by cm fore and the engineering staff around the Xza-1 pilots. From cm fore's mouth at the oct 87 introduction of the unihomes I attended in person at Nac.
Am I incorrect that every new unihome and unicoach and the latest models all came with Michelin's on them?
Michelin's I understand are still the only tire made that in a severe failure that shreds the sidewall and the straight across steel cord belts bring the rim down upon the tread belt. No flip flop.
As the non overlapped steel carcass is a Michelin design original the other brands use a thicker sidewall construction to hold the rim up off the tread belt in a depressurization failure.
As far as I have read and I have looked at every competing tires web pages no one else offers the self centering side sizes that Michelin features or offers a three retread 7 year/700k mile warranty for the commercial recappers.
The new legal slightly loose wheel bearing requirements of .001 to .005 rotor play adds a small amount of dead spot in my steering that was not there with the same Xza-3+ set of tires adjusted illegally with a non legally defineable slight preload on the front wheel bearings.
Our 40' Coach now requires a bit more steering wheel edge movement to initiate steering changes.
Noticeable, at least I think, so that the tires self steer straight at 97/87 psi on "h" tires.
Was magical with preloaded bearings. Now just excellent.
The Michelin's seem to "dive in" after a certain amount of steering wheel turning in a corner then as you exit the self centering feels like it reasserts itself.
My Xza-2's sidewalls cracked after 10 and seven years life before these -3+'s.
Newer SOB tires may work as well and not crack and be less money but I am reluctant to not use the Michelin's as I am extremely picky on the driving characteristics of our coach.
To me I think I can feel the Michelin "feel" from the thinner side wall construction.
I had ride issues and a steering wander and tire noise on our 08 sc430 when we bought it last year.
Pulled near new pirellis p1's off the car with 5k miles on them and put Michelin pilot super sport top rated by consumer reports tires and fixed all the issues.
Having not driven our similar coach with different tires i obviously do not have a current comparison so all the other brands mentioned may well drive and survive a failure exactly as well as the Michelin's so whatever everyone feels good using is great.
The straight across steel cord belt design Michelin has used since the 50's "x" adds on the billboards in the USA coupled with the self centering sipes seem to work well. Plus they ride well and are quiet.
As Wolfe mentioned I wish I could find a place to cut 5/32nd's off the tires as the tread block "squirms" slightly.