I cut a tire when turning into a campground yesterday on the rear outside dual-my bad. While backing into the campsite, the tire was flat and is now loose on the rim. I have a 40’ 2003 Beaver Marquis-Ruby with a tag axle and a Cat C-12 Engine. I have Toyo 12R22.5 tires on all three axles with 2011 date codes and the style of the tires is M111z. The local Toyo dealer can’t find the M111z style, not sure if Toyo even makes this style any longer. I will purchase two new tires and take one of the tires I replace to use for the outside rear tire that I ruined since they have the same mileage and wear.
The local dealer does have two M144 in a 315/80R22.5 that I could put on the front axle or tag axle. I looked on vin plate and the tires shown were the 12R22.5 with 8.25” rim width. Looking on Toyo’s specification for the 315/80R22.5 tires shows a recommended rim width of 9 to 9.75”. What problems do you think I may encounter if I purchase the 315/80R22.5 tires and install them on the 8.25” wide rims-or would the 315/80R22.5 tires even fit on the 8.25” rims? If the 315/80R22.5 tires fit on the 8.25” rims, would I be better to install the 315/80R22.5 tires on the front axle or tag axle?
If I can’t get the 12R22.5 tires, do you think I could remove both tag tires, and use one to replace the cut tire on the dual and then drive home? I am about 1000 miles from home. The vin plate shows 47,000 lbs. and I had just weighed my coach a couple of days ago. It weighed 40,700 lbs with a full tank of fuel, ½ full (50 gallons) on the fresh water, ¼ full (12 gallons) on the gray tank and ½ full (25 gallons) on the black tank. I do pull a trailer with my coach and it weighs 9,900 lbs.with 960 lbs. tongue weight.
Thanks for any advice.