Can I substitute 450/80r20 tires for 14.00 -20's?

[ericp351]

Have a 925A2 5 Ton. Can I sub the above tire size for the 14.00 r 20's? 14's are getting older, but I don't want to buy 7 now as only 1 or 2 are in need of upgrades. Thanks!

 

[fuzzytoaster]

You "CAN" but they're not the same thing. They're about 48" tall but give or take tread height on the 14.00 they could be marginally similar. The 450/80r20 is much wider, softer, and rated for lower speed by comparison. I bought a M1079 with a set of them on it and they scrubbed down to near bald in less than 1000 miles of pavement driving said the previous owner. I wouldn't do it as you'll just end up replacing it again soon.

 

[Defcon-1]

Have a 925A2 5 Ton. Can I sub the above tire size for the 14.00 r 20's? 14's are getting older, but I don't want to buy 7 now as only 1 or 2 are in need of upgrades. Thanks!

I was in the same boat last year when I lost 2 of my 14.00 XZL, but didn't want to buy 7 (or change over to 16.00) at once. 14.00 are super hard to come by but I see them every now and then on FB-MP, I found replacements of the 2 XZL's on there actually and have AT2's in their spot (forward steering axle).

I wish Erie PA was closer to where I am, I have a full spare set of Michelin XL 14.00 (bought a full set of 6, from a friend who upgraded to 16.00, as plan-B while I'm saving for AT3 / XZL in 16.00 myself). It will be interesting if I lose another XZL and have to install a XL tire, then I will have 3 different tire types on my truck. Sometimes I feel like I should just sell a kidney and get it all over with at once with buying 7 lol.

 

[ericp351]

Got it now. Those sand tires looked interesting, but unsuitable. Glad I asked though. Looks like original 14.00 20's now a crap-shoot. Bought 2 last year. Probably should have bought 4. Live and learn. ...