It is 275mm wide
I have an 04 1500 and it came factory 265/70/17 tires. If it has 20'' wheels it's P275/55R20 as standard, and P275/60R20 as the optional.
Yes, you can.
P265/65R18 (Standard) P275/65R18 (Option 1) P275/55R20 (Option 2)
No, is the answer based on the information you provided. I really need to know the full size of both sets of tires.
No
The stock tire size for a 1998 Dodge Ram truck is P275/60R17. These tires are widely available in a variety of designs for on or off-road driving.
The recommended pressure is listed on the sticker on the drivers door jamb.
I'm not a mechanic / technician but I would say ( N0 ) That's too much of a change in tire size ( and even if you could fit it on the rim , I doubt you would have the clearance ) * a P235/70/R16 tire is 29 inches in diameter , a P275/70/R16 tire is 31.2 inches in diameter , besides being a wider tire , and a taller tire , your speedometer would be reading incorrectly ( when your speedometer shows 60 MPH you would actually be travelling at 64.6 MPH )
p275-16s are near the limit. You'll have to gear down your front and rear diff, otherwise the big tires will bog you down on the highway.
No, a 245 tire is 245 mm wide. A 275 is 275 mm wide.
The size of Chevy Avalanche wheels is around P275/55R20 111S, if you buy it from 2006. If you on the other hand, want a tire from before 2006, the size will be diffrent.
Of course you can.