just bought a '95 4dr blazer lt. tires are shot and im lookin at puttin goodyear authroity at on it. will a size 31x10.5x15 fit stock or will i need to modify the vehicle? if so what should be done?

 

Welcome! from down under.
Any pics?

 

Welcome,

30X9.5R15 is the the biggest you can go stock without rubbing. For 31x10.5R15 you'll need at the very least a 2" body lift.. and you're still going to have rubbing issues when you turn.

 

depends on weather it is 2wd or 4x4. my 2000 LS 2wd needs a 3" lift just to fit 30's

 

Do a search in the tire and rim section of the forum. This has been discussed at length many, many, many times.

And Welcome to the forum from Canada!

 

Weird.. my 01 doesnt need any..and its 2wd

 

i test fitted a set of 30's on my 2000 and they rubbed and i checked into the rough country 3" body lift and it said it would only accomodate 30" tires

 

a 3" lift and only clearing 30's?!? That can't be right. There isn't that much ride height difference between a 4x4 and a 2wd. My STOCK height 4x4 has 30's on it now with no rubbing issues what so ever. It's about an inch or so from rubbing anywhere. Maybe you're tbars have been cranked down? Seems a bit off that Martin could fit them and you couldn't...
Either way, with a 3" lift you should be able to clear 31's at least.