2002 E450 Superduty tires
I have tried searching and wading thru old and new info and I could not find the info I was looking for. My Tioga 31W is in need of new tires. As it is 31ft class c it runs at max weight. I try to ...
Forum Discussion
I don't "Look for Trouble" but I try hard to reduce Trouble's Impact. For that reason, I like things I'm most likely to be able to fix when we're somewhere off the the beaten path. So for our Class C that runs at max (and CAT Scale says it does...), I went to a commercial duty tire, from a popular brand, IN MY SIZE.
For example, Michelin's fabled LTX series is a great tire but it's still an OEM tire. Not a thing wrong with it, it'll do its job, do it well, because it's from a quality manufacturer. That said, Michelin's Defender and XPS are higher in their food chain, so I'd consider them as Performance and Durability Upgrades.
Our coach came to us with Bridgestone Duravis R250's. These are a Highway Tread, equivalent to XPS Rib. Because they had run smooth and quiet, and worn well, I bought another set. So far no problems.
It's clear to me that the "C" in the Euro tires is roughly equivalent to the "E" or the "LT" in our USA designations. Yet I cringe, already hearing "My tires were C so I replaced them with D. That's better, right?"
Only Promaster I've been close to was a Canadian stuck in sand by my campsite last fall. Pulled it out by the hitch so we wouldn't tear up all the plastic. Only Promaster I've read about was an RV that turned out to have near-zero carrying capacity because of its single rear wheel chassis.
Tires or none, Promaster = PFFT! No way for an RV. I see them in plain white panel delivering for Amazon and for that, sure.
Oh, Promaster, being Single Rear Wheel, doesn't get into Dual Wheel Offset (aka Dually Spacing) issues. This spacing works out to the clearance between sidewalls, but it's not specified that way. It's the measurement between two matching features of the mounted rims or the mounted tires. If your tires are a matched pair, measure between one tread groove on one tire and the corresponding groove on the other. Say you get 10-inches. That's the Dually Spacing, and each wheel offset is 5-inches. Space between the sidewalls might be 1/2-inch or 2-inches but Spacing is still 10-inches. There are specs for this, and notice it isn't shown in the linked info in this thread. So you need more information. Sticking with my example of 10-inch measured spacing, you don't want to go to new tires with an 11-inch spacing specified. If you want those, you need new wheels. NOT SPACERS!!! Even if your lugs are long enough, the centering "pilot" part of the hub isn't.
I'd consider taking off on Phil's tire size change. See if LT235/85E will upgrade from LT225/75E by finding the Dually Spacing for those two sizes. You could pick up a little more capacity and still have commonly available tires.
For example, Michelin's fabled LTX series is a great tire but it's still an OEM tire. Not a thing wrong with it, it'll do its job, do it well, because it's from a quality manufacturer. That said, Michelin's Defender and XPS are higher in their food chain, so I'd consider them as Performance and Durability Upgrades.
Our coach came to us with Bridgestone Duravis R250's. These are a Highway Tread, equivalent to XPS Rib. Because they had run smooth and quiet, and worn well, I bought another set. So far no problems.
It's clear to me that the "C" in the Euro tires is roughly equivalent to the "E" or the "LT" in our USA designations. Yet I cringe, already hearing "My tires were C so I replaced them with D. That's better, right?"
Only Promaster I've been close to was a Canadian stuck in sand by my campsite last fall. Pulled it out by the hitch so we wouldn't tear up all the plastic. Only Promaster I've read about was an RV that turned out to have near-zero carrying capacity because of its single rear wheel chassis.
Tires or none, Promaster = PFFT! No way for an RV. I see them in plain white panel delivering for Amazon and for that, sure.
Oh, Promaster, being Single Rear Wheel, doesn't get into Dual Wheel Offset (aka Dually Spacing) issues. This spacing works out to the clearance between sidewalls, but it's not specified that way. It's the measurement between two matching features of the mounted rims or the mounted tires. If your tires are a matched pair, measure between one tread groove on one tire and the corresponding groove on the other. Say you get 10-inches. That's the Dually Spacing, and each wheel offset is 5-inches. Space between the sidewalls might be 1/2-inch or 2-inches but Spacing is still 10-inches. There are specs for this, and notice it isn't shown in the linked info in this thread. So you need more information. Sticking with my example of 10-inch measured spacing, you don't want to go to new tires with an 11-inch spacing specified. If you want those, you need new wheels. NOT SPACERS!!! Even if your lugs are long enough, the centering "pilot" part of the hub isn't.
I'd consider taking off on Phil's tire size change. See if LT235/85E will upgrade from LT225/75E by finding the Dually Spacing for those two sizes. You could pick up a little more capacity and still have commonly available tires.
