im needing some tires here soon. looking at toyo proxies because nitto dosent make the size i want. i was thinking i wanted a fatter tire in the back

255/60-17 for the front=29.05" tall

275/55-17 for the rear=28.90" tall

pretty dumb question, but would the .15" difference in the heights be noticeable? or should i just choose one size or anoter and get all 4 the same size. my truck has a 3/4 drop and its going on 2005 factory chevy wheels.

anyone know how wide the factory wheels are? im figuring 8"

 

"anyone know how wide the factory wheels are? im figuring 8"

https://ls1tech.com/forums/showthread.php?t=190562

 

I don't think you'll notice the 1/10 of an inch difference.

 

already checked that. my rims arent on there. i got the 17" 2005 chevy rims.

 

Assumed it would be there. Searched the web a bit, all I found was this blurb from about.truck.com

Six-lug painted 17" x 7" steel wheels standard on Work Truck Models

Six-lug chrome-styled steel 17" x 7.5" (except 2WD Extended Cab and 2WD/4WD Crew Cab models)

 

Just take your wheel off. It's stamped on one of the inside of one of the spokes. Should have wheel diameter by width and an offset listed.

 

Funny, I was actually thinkin' of the same combo for my denali wheels.
Your 05 wheels should be 7.5" wide, which 275s will fit.