I feel the need to bring a point regarding tire properties, I am primarily talking about those of us at the high end of the load and high c/g spectrum.
The point is sidewall rigidity, and the ability to withstand sideloads and reduce sway.
Granted, most or many never get to the loads where this really becomes much issue.
and many that do, have the duals which mitigates much of this. As well as the fact
that the softer side walls do much to promote ride quality being a intragal part of
the suspension, absorbing many of the road defects and irregularities.
If I did not consistantly carry High (vertically) Heavy loads, I would not consider the 19. 5 tires. Granted, the 3750 toyos I just now been informed of would certainly
(I would hope) be an improvement over the 3195 Cooper STs but with the wider tread,
MAY BE NOT? At least in terms of sidewall roll and sway. Many things can be done to stiffen your suspension, air bags, timbrens, swaybars... ... ... But on my 03 3500 SWR,
once i'm on the overloads its pretty good, doesn't mean it couldn't better, but it seems to be acceptable. Thats the Truck, the tires are another story, having observed my own truck being driven down the road under load the tires are squishing,
squashing, rolling far too much for my piece of mind. and this is not at weights which
exceed their rated capacity, close but not over. I'm glad I haven't followed it
during some of the heavier loads, I'd just rather not know.
Many of us have observed an SRW with the slide-in Camper going down the road, if you have not looked at the tires do so, especially in high winds or on curves.
In this case it's not just the weight but the CG as well. I have a flat bed which
raises my CG as well, Plunk a pallet on it and it's pretty high up.
Tread width: I learned that it's NOT measured at the tread, but instead at the widest
portion of the sidewall, hence a 265 is in reality more like 250> at the tread itself
less or more depending on brand, type, and size.
When going to a 19. 5 the much straighter sidewall of these tires results a wider tread
for a given size. In reality a 245 19. 5 is within a 1/4 to 1/2" of a 265 17 in terms of actual tread width.
Match mounting: There are no perfect circles. No rim, no tire is perfectly round.
match the irregularities and you have much better round tire/wheel combo.
All factory tires and rims are match mounted. Thats what the little green round sicker on your rims is for, there is a corresponding mark on the tire as well but dealer prep usually eliminates this, check your spare. Rickson wheels say they reject over 40%
of all tires in the Match Mounting process.
Dynamic Ballistic balancing fill: plastic shot inserted inside the tire/rim to help with
Dynamic balancing of stiff hard tires to help improve ride.
19. 5 PROS and CONS:
PROS: VAST Selection of tire, tread, and weight ratings F,G,H Sizes and brands
up the wazoo. Minimal sidewall flex, 2+ times tread life, regroovable tread,
greater puncture resistance, often times less rolling resistance, peace of mind
during heavy hauling.
CONS: High Initial cost, Lowered ride quality, Possibly less snow/mud traction?
(Harder tread ) , And to some, asthetics.
Rich