Tires/Rims/Suspension Discuss your tires, rims, and your suspension system in here.
Sponsored by:
Sponsored by:

7th Gen ('06-'07): 285/40/18 on 18x9s or 18x10s

  #1  
Old 08-23-2018, 12:33 PM
1 Year Member
Thread Starter
Join Date: Dec 2016
Posts: 16
Default 285/40/18 on 18x9s or 18x10s

I'd like to know if anyone ever ran
285 40 18s on 18" Mustang rims?

I recently picked up a 07 Monte SS the
factory rims are ok, but in my eyes just
bland & boring, for fun I put on a set of
17x9s Bullets I think it looks decent but


I'd like to know if 18x9.5 (+/-) 285s fit.
 
  #2  
Old 08-23-2018, 12:48 PM
Monte Of The Month -- October 2009
10 Year Member
5 Year Member3 Year Member1 Year Member
Join Date: Feb 2008
Posts: 4,214
Default

I'd be careful with going too narrow a wheel with a 285. Many of the manufacturers I've seen have a minimum reccomended rim width of 9.5" for a 285.

Just curious, why a 285? Just seems like a bit of am oddball size given all the options for a 275.
 
  #3  
Old 08-23-2018, 02:40 PM
1 Year Member
Thread Starter
Join Date: Dec 2016
Posts: 16
Default

285/40s are close to factory size, only .25" shorter.

The wheels would probably be 9.5" to 10" wide.
 
  #4  
Old 08-23-2018, 08:47 PM
Monte Of The Month -- October 2009
10 Year Member
5 Year Member3 Year Member1 Year Member
Join Date: Feb 2008
Posts: 4,214
Default

Concerned about the speedo? A 275/40 is a little further off in height, but the difference is negligible on the speedo, maybe 1 mph or so at highway speed.
 
  #5  
Old 08-24-2018, 06:05 AM
1 Year Member
Thread Starter
Join Date: Dec 2016
Posts: 16
Default

Originally Posted by bumpin96monte View Post
Concerned about the speedo? A 275/40 is a little further off in height, but the difference is negligible on the speedo, maybe 1 mph or so at highway speed.
It would actually be 3.5 mph difference because of height.

But for my 07 SS its my DD&MPG car. Theoretically having
a smaller diameter tire would give me better acceleration
but I'd be spining a lil faster on the highway eating more gas.

Yes it's probably a minimal amount but I'd rather be closer
to factory diameter. I've actually noticed that a 295/40/18
is the same height, but it's a pretty Wide Tire 295 s on all 4
corners would look pretty sick in my eyes. Need feedback.
 
  #6  
Old 08-24-2018, 05:34 PM
Monte Of The Month -- October 2009
10 Year Member
5 Year Member3 Year Member1 Year Member
Join Date: Feb 2008
Posts: 4,214
Default

Originally Posted by 01-Monte-SS View Post
It would actually be 3.5 mph difference because of height.
Looking at tiresize.com's comparison of a 235/50 vs 275/40, it shows a 1.5 mph difference at 70.

But for my 07 SS its my DD&MPG car. Theoretically having
a smaller diameter tire would give me better acceleration
but I'd be spining a lil faster on the highway eating more gas.
Honestly, I wouldn't get too hung up on gas mileage though. No doubt a slightly shorter setup will change the gearing a bit, but you're talking about adding 2 inches of rim and 50mm of tire per corner. I'd bet you'll end up adding some notable rotational mass unless you get a really light wheel.
 

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.