18" Tire Replacement

[hs5870]

I have a 2024 silverado diesel dually ltz that came with 235/80r18 tires. At 27000 miles they need to be replaced. I haul a 35' 5th wheel with truck . Only Michilin makes the replacement tire , Has anyone put on 245/75r18 tires & is it an issue with the rear tire gap with a load on?

 

[newdude]

1 hour ago, hs5870 said:

I have a 2024 silverado diesel dually ltz that came with 235/80r18 tires. At 27000 miles they need to be replaced. I haul a 35' 5th wheel with truck . Only Michilin makes the replacement tire , Has anyone put on 245/75r18 tires & is it an issue with the rear tire gap with a load on?

 

 

 

There are two tires I see in 245/75R18 on Tire Rack and none of them are E load 121 load index.  So no, won't work.  

[hs5870]

yokohama makes the geolandar all terrain in 245/75r18 inan E rating. My concern is the Traction width (gap) between the rear tires with a load