285/40/18 tires fit the front ? Help - MustangForums.com

S197 Handling Section For everything suspension related, inlcuding brakes, tires, and wheels.

Thread Tools Search this Thread
Old 03-27-2016, 11:09 AM   #1  
2nd Gear Member
Thread Starter
justin96gt's Avatar
Join Date: Jan 2007
Location: tx
Posts: 232
Default 285/40/18 tires fit the front ? Help

Ok looking for help I found a to good to pass up deal on some and I need front tire I am running 275 right now in the front .

I was wondering if they would fit with the offset of the wheel being +24 I saw somewhere saying as long as it stays below +40 you were good . And if anyone has any pics please post them

I found a lot of people saying yes just want to confirm and see some pics if anyone has them
justin96gt is offline   Reply With Quote
Old 03-29-2016, 10:37 AM   #2  
Norm Peterson
6th Gear Member
Norm Peterson's Avatar
Join Date: Feb 2007
Location: state of confusion
Posts: 7,487

First things first. What is the full size of those wheels? Diameter x width.

Offset requirements are set on the maximum positive side by things like strut and LCA clearances, which is why you see +42 offset 18 x 10 wheels used up front. But too small of a positive offset will put you in tire to sheetmetal trouble. The wider the wheels and tires, the smaller the range between min+ and max+. Tire diameter makes it even more critical.

I have 285/35-18's on 18 x 11's up front, 10.2" wide at the tread, and it doesn't rub. For street driving I might even be able to get away running 285/40's (40's would have about 9/16" less tire to fender clearance, vertically) unless I was to lower the car (it's basically stock height). On the track likely not because of the more severe suspension travel associated with that activity. Offset data not available but different from the typical 18x10's (+42-ish?) or the 2008-ish GT500 18x9.5 (+45) wheels. I do know that people have run 285/40's on the GT500 wheels up front, some getting a little light rub under full lock or other conditions, others not.


Last edited by Norm Peterson; 03-29-2016 at 10:41 AM.
Norm Peterson is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Wheel Spacers? 66and06stangs V6 S197 General Discussion 2 04-05-2016 12:53 PM
Luke, I need help to buy the best budget tire Daleford Wheels & Tires 6 03-30-2016 08:14 PM
Lots of wandering (tramlining?) after installing cobra wheels Dylan Mertz V6 (1994-2004) Mustangs 11 03-24-2016 12:37 PM
66 power steering hose fittings mnccnm Classic Mustangs (Tech) 2 03-23-2016 02:51 PM
WTB: Rear wheels with drag radials mmarsh3014 Want To Buy Ads 0 03-23-2016 06:26 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 03:42 AM.

© 2018 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.