Tire recommendations for Class 7

tbone1004

Observer
Picture for reference. Spartan Furion chassis. Currently has Michelin 275/70/22.5's on it with highway ribs and she has gotten stuck twice in the backyard. Front axle is sinking, rear axle despite an air locker doesn't have any traction to speak of and the tires are highway ribs so can't even grab traction boards. GVW is ~28,000lbs with ~13,000lbs on the front axle so not a ton on the rears.
Fronts I need to do something about because a. they look stupid, but b. I don't think there is enough floatation on that front axle and need to remedy. Factory called for 305/70r22.5 but I'm assuming that Miami put the same tires on front/rear for convenience. Rears I will have to increase the bump stops a bit but that's relatively easy.

The question is to go with 315/80r22.5's or 12r22.5's. I would have to swap the rims out for 315's, but that's not the end of the world as these Alcoa's still have a decent bit of value, especially with Michelins on them. Any specific tire recommendations for a vehicle that will spend most of its time on the highway but I don't want it to get stuck in the National Parks when it's wet....

474014003_1534489790573120_3412976408123783382_n.jpg
 

Joe917

Explorer
I had 315 80 22.5 tires on our MB917 At 9400kgs they are not wide enough. Go to at least 365's.
As for a specific tire you want an "all position" tire. Look at tires designed for construction and logging vehicles.
 
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tbone1004

Observer
I had 315 80 22.5 tires on our MB917 At 9400kgs they are not wide enough. Go to at least 365's.
As for a specific tire you want an "all position" tire. Look at tires designed for construction and logging vehicles.
thanks, will start looking wider and see what will still fit without rubbing/reducing turning radius. Definitely going with either a waste management or dump truck style tire, just didn't know if anyone had gone through and found some of the better models or brands out there as these are painfully expensive.
 

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