I would guess 265/70 R16 would be what you have now. With the raised torsion bars, I would say max tire size would be 305/75 R17/18. If you do a lot of off-roading though, I would go with a size of 285/75 R17/18 just to be safe.

 

It is currently riding on the 245/75/r16 stock tires.......

Thanks !!

 

It is currently riding on the 245/75/r16 stock tires.......

Thanks !!

Wow, no wonder the HD truck tires look so small.... My Z71 came with 265/70 R17

 

I don't do a lot of "off roading" per say, but I do tow a small 14' foot fishing boat back in some of the smaller lakes in northern Arizona for fishing excursions. I would say about 98% of the roads I travel on are no worse in shape then dirt fire access road.

I would assume that in upgrading wheels and tires, I would also need to be concerned with the off set of the wheel as well..... Bigger tire, more offset one way or another might affect the turnin radius I have, no ?

Thanks !!

 

I will have the speedo calibrated once the larger tires are installed... That is just part of this whole equation...... Typical proceedure.....

I have never had an issue with the ABS not working or not working correctly when I have installed bigger tires on my trucks in the past. Is there something with this NBS that will be affected with the larger tires that I should be concerned with ?

Thanks !!!!

 

I don't do a lot of "off roading" per say, but I do tow a small 14' foot fishing boat back in some of the smaller lakes in northern Arizona for fishing excursions. I would say about 98% of the roads I travel on are no worse in shape then dirt fire access road.
I would assume that in upgrading wheels and tires, I would also need to be concerned with the off set of the wheel as well..... Bigger tire, more offset one way or another might affect the turnin radius I have, no ?

Thanks !!

Don't worry about the boat, its not big enough to affect anything.

305's should fit just fine w/o off set. I know a couple people that are running some BFG all terrains TA KO's 305/70 R16 on some Silverado's and have no problems rubbing. The trucks are completely stock and only have the torison bars turned all the way out. With that said, I am pretty sure there is no differnce between wheel wells of a 2500 Suburban and a 1500 Silverado, not positive though. I would personally go with a set of 285's though just cuz 305's look almost to much to me.

A question I have though is when increasing the rim size by only a few sizes, does the overall height of the tire including the rim change or just the size of the rim opening of the tire (i.e, bigger rim = less side wall)? If it does, then everything I have previously said probably won't work for you.

 

When increasing rim size, just the sidewall gets smaller, and you get a rougher ride, so with the torsion bars cranked, You should get a smaller sized rim.

285/75R16 Would be a good size.

 

I will have the speedo calibrated once the larger tires are installed... That is just part of this whole equation...... Typical proceedure.....

I have never had an issue with the ABS not working or not working correctly when I have installed bigger tires on my trucks in the past. Is there something with this NBS that will be affected with the larger tires that I should be concerned with ?

Thanks !!!!

If you dont get the Speedo recalibrated, your odometre and everything else goes slower, so it looks like you have done less miles.