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New Tire Size Help

Entryteam

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Entryteam Enthusiast

Entryteam

Posted
Posted

Hello all,

 

bewen lurking here for awhile....need some advice on something. I am gonna put new and bigger tires on my stock Z71. I have to choose between a 285.75.16 and a 305.70.16 (with the torsion bars turned a little). Does anyone have any advice, or is anyone driving a Z71 with the bars turned/big tires??

 

thanks,

 

Ronnie

Z71SierraSLT Enthusiast

Z71SierraSLT

Posted
Posted

I have a 2000 GMC K1500 Sierra SLT Z71 4dr Ext Cab.

 

I put on 16x8 wheels with 4.5" back spacing with some 285/75/16s Phantom ATs. They rubbed a little, but I didnt have to trim.

 

I just bought a new set of tires after putting 82,000 miles on those Phantom ATs.

I purchased a set of Nitto Terra Grapplers 285/75/16s. With these tires (and with the same wheels as above), I had to trim the inside front rubber wheel wells to keep them from rubbing. The more aggressive tread prompted me to trim this time. After the trim, no rubbing at full turns going forwards or backwards. I never had to crank the torsion bars with either set of tires.

Entryteam Enthusiast

Entryteam

Posted
  • Author
Posted

I am thinking that, from I am reading and hearing, that I can run the 305.70s with little problem. I am thinking of going with Cooper Discoverers on OEM 16 inch wheels. Any thoughts on these tires??

 

-R

 

 

 

 

I have a 2000 GMC K1500 Sierra SLT Z71 4dr Ext Cab.

 

I put on 16x8 wheels with 4.5" back spacing with some 285/75/16s Phantom ATs. They rubbed a little, but I didnt have to trim.

 

I just bought a new set of tires after putting 82,000 miles on those Phantom ATs.

I purchased a set of Nitto Terra Grapplers 285/75/16s. With these tires (and with the same wheels as above), I had to trim the inside front rubber wheel wells to keep them from rubbing. The more aggressive tread prompted me to trim this time. After the trim, no rubbing at full turns going forwards or backwards. I never had to crank the torsion bars with either set of tires.

 

 

 

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

305's aren't going to last long at all on stock rims (if you can even drive with them on there) due to how narrow the rims are.

 

They're going to cup like a mofo.

Entryteam Enthusiast

Entryteam

Posted
  • Author
Posted

So....the 285s would be better on treadlife??

 

-Ronnie

 

305's aren't going to last long at all on stock rims (if you can even drive with them on there) due to how narrow the rims are.

 

They're going to cup like a mofo.

 

 

 

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

Quite a bit better, but they're still a little "pinched".

 

You'll get 10k more out of them if you actually rotate them every 3-5k miles.

 

When I went from stock rims to aftermarket (staying with the 285/75/r16 Nittos), the offset was a little different so I had to trim a little off the airdam, but they didn't wear funny because the rim was wider.

Z71SierraSLT Enthusiast

Z71SierraSLT

Posted
Posted
Quite a bit better, but they're still a little "pinched".

 

You'll get 10k more out of them if you actually rotate them every 3-5k miles.

 

When I went from stock rims to aftermarket (staying with the 285/75/r16 Nittos), the offset was a little different so I had to trim a little off the airdam, but they didn't wear funny because the rim was wider.

 

 

 

 

 

I agree with Wingnut. Keep those tires rotated. I got 82,000 miles on my Phantom ATs. Hopefully I can get somewhat close to that with the Nittos.

I wouldn't go with the 305, they just look too big in the wheel wells.

I have pics of my truck on my profile with both sets of tires.

Entryteam Enthusiast

Entryteam

Posted
  • Author
Posted

Just to keep everyone posted...I went with the 285s and couldn't be happier. It rides like a cadillac again..smooth, quiet, no rubbing, and no loss of overall driving quality. Thanks for all the advice. Now I just have to get the exhaust lined out.

 

later,

 

Ronnie

 

 

 

 

 

 

Quite a bit better, but they're still a little "pinched".

 

You'll get 10k more out of them if you actually rotate them every 3-5k miles.

 

When I went from stock rims to aftermarket (staying with the 285/75/r16 Nittos), the offset was a little different so I had to trim a little off the airdam, but they didn't wear funny because the rim was wider.

 

 

 

 

 

I agree with Wingnut. Keep those tires rotated. I got 82,000 miles on my Phantom ATs. Hopefully I can get somewhat close to that with the Nittos.

I wouldn't go with the 305, they just look too big in the wheel wells.

I have pics of my truck on my profile with both sets of tires.

 

 

 

 

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