New 2007's/Upgrade tires?

[miscverb]

hi all. i am thinking about getting the nbs chevy or gmc. one thing about the gm trucks that i always do is upgrade the tires. have anyone out there with the nbs 2007 upgraded the tires? i know what i would purchase comes with the 265x70x17. i would like to go 285x70x17, just curious if it will fit with/without some trimming. But the new body styles look like they may not be able to be trimmed on the front bumper/valance like the older styles. any thoughts?

 

thanks

[yeehaw87]

The new trucks ive seen would fit 285's, but you might have to crank the torsion bars up a few turns. They sit way too low in front, but I guess thats the price you pay for aerodynamics.

hi all. i am thinking about getting the nbs chevy or gmc. one thing about the gm trucks that i always do is upgrade the tires. have anyone out there with the nbs 2007 upgraded the tires? i know what i would purchase comes with the 265x70x17. i would like to go 285x70x17, just curious if it will fit with/without some trimming. But the new body styles look like they may not be able to be trimmed on the front bumper/valance like the older styles. any thoughts?

 

thanks

 

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[miscverb]

Well the nbs do not have torsion bars anymore, they are coil over. I think i will go take some measurments at a dealer today.

 

 

The new trucks ive seen would fit 285's, but you might have to crank the torsion bars up a few turns.  They sit way too low in front, but I guess thats the price you pay for aerodynamics.

hi all. i am thinking about getting the nbs chevy or gmc. one thing about the gm trucks that i always do is upgrade the tires. have anyone out there with the nbs 2007 upgraded the tires? i know what i would purchase comes with the 265x70x17. i would like to go 285x70x17, just curious if it will fit with/without some trimming. But the new body styles look like they may not be able to be trimmed on the front bumper/valance like the older styles. any thoughts?

 

thanks

 

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[Travis17TX]

I am ordering tires today for my 2007 Z71 Votecmax and the guy at discount is telling me that 305 40/45 R22 will fit. I say it is not so, maybe 295. Any thoughts??

[miscverb]

I do not think 305s will even be close. here is what i found yesterday.

 

i took a look at a 2007 sierra, nbs, with 265x70x17 goodyear wranglers with the gm 17 inch wheels.

 

the stock wheels have a section width of 10.7 and a diameter of 31.8. now i am interested in putting a mud tread on and am looking at the goodyear 285x70x17 mtr tires that have a section width of 11.5 and diameter of 32.9.

 

so for the tire i want the increase in size is 1.8 for the section width (fatter) and 1.1 increase in diamter. these increases are then .9 on each side of the center of the tire axis for section width and .55 on each side of the center of the axis for diameter. another words the tire will be .9 fatter on each side and .55 "longer" on each side of the center of the wheel.

 

taking measurements during full wheel turns on the truck, in general there is a clearance of about 1.5 inches at the closest rub points. so based on the .9 increase in section width is should work, and based on .55 increase in diameter it should work.

 

Bottom line, its going to be real close with 285s, if lucky there will be .5 free space between the tire and wheel well plastic. And since i have done this on multiple trucks, i expect i will have to trim the interior wheel well plastic some to account for suspension movement (bumps). I do think 275 tires in the tire i want would work ok, but that is not much bigger than stock.

 

hope this helps.

 

 

 

 

I am ordering tires today for my 2007 Z71 Votecmax and the guy at discount is telling me that 305 40/45 R22 will fit.  I say it is not so, maybe 295.  Any thoughts??

 

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[DMAX Daddy]

You can order 275/55R20's stock