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Discussion Starter · #1 · (Edited)
Hi everyone,

I'm very seriously considering purchase of a Colorado ZR2. I do not want to lift or cut anything. Quite simply is the room for a 255/75x17 LT C-rated or 265/70x17 LT C-rated without any modification to the vehicle? I definitely prefer a higher sidewall than the 65-profile and also need LT C-rated for some sidewall protection. My current ride is a 2016 Silverado reg. cab but 2wd.

Would be getting the ZR2 extended cab with an in-bed spare tire mount.
 

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255/75x17 LT is 32.1X10"
260/70x17 is ?? Closest I could find is a 265/70x17 at 31.6x10.4"
ZR2 is 30.6x10.4

I think the 265/70x17 well fit, the 255/75x17 may have a slight rub at full compression with wheels turned close to stops.

You can use the RC921 spacer to level the front and give you additional clearance. There's a thread on using the RC921, needs a new bump stop.
 

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Discussion Starter · #4 ·
255/75x17 LT is 32.1X10"
260/70x17 is ?? Closest I could find is a 265/70x17 at 31.6x10.4"
ZR2 is 30.6x10.4

I think the 265/70x17 well fit, the 255/75x17 may have a slight rub at full compression with wheels turned close to stops.

You can use the RC921 spacer to level the front and give you additional clearance. There's a thread on using the RC921, needs a new bump stop.
Yes, my mistake - is 265/70x17 - Duratrac is available in that size LT load range C, also BFG KO2 load range C. Would probably go that route.

Thanks.
 

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I'm curious about the 255/75 myself as I would prefer to stay at the factory width or slightly narrower while getting the extra height. The 285 sized tires just don't look right, IMO, unless you put a taller lift under the truck and with a ZR2 it's foolish to mess with the suspension. I'm even a bit leery of the 1" leveling spacers for the front. Time will tell how those work out but I'm thinking the better option is a body lift, however I'd rather not have to do either and be able to fit 255's comfortably without looking shoehorned in the wheel wells.

I'd really like to see a truck with 255/75's but I haven't found one yet. One member here has 245/75's on their ZR2.
 
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