255 45r18 on a Monte Carlo SS
11-24-2010, 11:03 AM
#1
Launching!
Thread Starter
Join Date: Jul 2009
Posts: 285
Likes: 0
Received 0 Likes
on
0 Posts
255 45r18 on a Monte Carlo SS Have any of you Monte guys run a 255 45r18 on a stock 18 inch wheel? The overall diameter is only .8% off of the factory 235 50r18. I just want to make sure they will not rub on the rear strut. I am sure some of you have done this, right? Thanks in advance. 
11-24-2010, 09:01 PM
#5
TECH Fanatic
iTrader: (6)
Join Date: Jan 2007
Location: Ain't tellin'
Posts: 1,406
Likes: 0
Received 0 Likes
on
0 Posts
I have 255's on all 4 corners on the GXP. The GXP has a 7" rear rim and it works fine and does not rub. It also cut down on a lot of torque steer. I feel it handles better too. I got all 4 at onlinetires dot com for 378.00. Cheapest place I have found for tires.
-Mike
-Mike
11-24-2010, 09:47 PM
#6
TECH Resident
iTrader: (3)
Join Date: Feb 2009
Location: Houston, Tx
Posts: 933
Likes: 0
Received 0 Likes
on
0 Posts
Stock SS rims are 7.5in. I know some have done it, but i think you have to worry about tire bulge on the rim. Personally I wouldn't go more than a 245 on a 7.5 in rim.
11-24-2010, 11:08 PM
#7
Staging Lane
Join Date: Feb 2010
Location: Kyle, Texas
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
I'm currently running 255/45/18's on 8" wide wheels. It's an impala, with aftermarket wheels, so that may not help you. They DO RUB on the back, only when the vehicle is loaded down and running over bumps. If I would roll the fenders it would be ok. Please do not put 255's on the stock wheels. Just looked at the stock impala wheels in the garage and they are only 7" wide, the look and ride would be terrible. Find some nice wheels to put those tires on! Just my opinion.
Trending Topics
11-25-2010, 07:08 AM
#9
TECH Fanatic
Join Date: Jan 2007
Location: LITH, IL.
Posts: 1,029
Likes: 0
Received 0 Likes
on
0 Posts
look on the web to see if any tire or rim manufacture shows that size being acceptable on less than an 8" rim. (the MCSS is 7"). Hint: you won't find one. There is a reason for it. They don't consider it safe. That sidewall breaks the seal against that rim on a steering wheel at speed and you have a very serious problem.
11-25-2010, 07:24 AM
#10
TECH Fanatic
iTrader: (6)
Join Date: Jan 2007
Location: Ain't tellin'
Posts: 1,406
Likes: 0
Received 0 Likes
on
0 Posts
My rear tires do not bulge (at least not bad at all) and I've been running them for almost 1 year. No sidewall problems here. I say go do it, you'll be very happy. You'll see.
-Mike
-Mike
11-25-2010, 09:18 AM
#11
Launching!
Thread Starter
Join Date: Jul 2009
Posts: 285
Likes: 0
Received 0 Likes
on
0 Posts
look on the web to see if any tire or rim manufacture shows that size being acceptable on less than an 8" rim. (the MCSS is 7"). Hint: you won't find one. There is a reason for it. They don't consider it safe. That sidewall breaks the seal against that rim on a steering wheel at speed and you have a very serious problem.
11-25-2010, 01:27 PM
#12
Launching!
iTrader: (4)
Join Date: Feb 2008
Location: Bellevegas, IL
Posts: 265
Likes: 0
Received 0 Likes
on
0 Posts
Im running 18x8.5 inch wheels with 255/45/R18 and have had no problems or rubbing at all. Had to roll my rear fenders when I lowered my car, but otherwise u should be good to go
09-22-2015, 12:13 PM
#13
Registered User
Join Date: Sep 2015
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
I have a 06 monte carlo ss and im running 255/45 18 nitto 555 and i have no problems with rubbing. I thought the front was going to rub but it did not. They are not easy to put on because they are oversized. The only problem i am having is that i cannot get an alignment because the tire fits to tight to the rim the sensors cannot ft onto the rim.
