18" tire question
Thread Starter
12 Second Club
Joined: Oct 2011
Posts: 217
Likes: 0
From: Seaford,DE
18" tire question getting ready to order a set of 18" 9.5 rims this weekend but idk what tire size would work 275/40/18 work all the way around or shound i go skinner to a 275/35/18 p.s. its stock ride height but when i get the new shocks/struts in lowing about 1.5 inches
Staging Lane
Joined: Jul 2005
Posts: 55
Likes: 0
From: Georgia / Kentucky
Do 275/40ZR18's.
275 = section width in MM (1 inch equals 25.4 mm)
35= sidewall height 35% of 275mm
275/35 = Aspect ratio
I think the 275/35 would look a little short.
Look at 285/35R18s in rear & 275/35R18s in front if you like lower sidewalls.
Toyo makes the T1 Sport in both sizes, so Nitti probably does as well.
Cowpunk
275 = section width in MM (1 inch equals 25.4 mm)
35= sidewall height 35% of 275mm
275/35 = Aspect ratio
I think the 275/35 would look a little short.
Look at 285/35R18s in rear & 275/35R18s in front if you like lower sidewalls.
Toyo makes the T1 Sport in both sizes, so Nitti probably does as well.
Cowpunk
Thread Starter
12 Second Club
Joined: Oct 2011
Posts: 217
Likes: 0
From: Seaford,DE
cowpunk i know what the measurments are im a service writer i do all that for a living. my man issue is 90% of the roads around where i live are pothole heaven and i aint about replacing bent rims. and yes nitto makes a 275/35 and a 275/40. plus i want to be able to rotate my tires. until oewheels comes out with the new style zr1s in 18" 10.5 for the rear
I had 18x 9.5 C5 Z06 all the way around and ran 275/35/18 on all fours with BMR 1.25 lowering springs. You can fit a 285/35/18 tire and i think that will fit perfect.
Staging Lane
Joined: Jul 2005
Posts: 55
Likes: 0
From: Georgia / Kentucky
cowpunk i know what the measurments are im a service writer i do all that for a living. my man issue is 90% of the roads around where i live are pothole heaven and i aint about replacing bent rims. and yes nitto makes a 275/35 and a 275/40. plus i want to be able to rotate my tires. until oewheels comes out with the new style zr1s in 18" 10.5 for the rear
And, I've sold tires for 25+ years. 35's will have a shorter sidewall than 40's.
Potholes will still be tougher on the 35's than a 40's.
If you think the shorter 35's would look better, get them. That's what I would do too.
Cowpunk
Trending Topics
I am lowered on Strano/Koni's and running a 275/40R18 in the front and a 295/40R18 in the rear. Looks perfect to me. I've had no problems with it but notice a slight rubbing noise when turning the wheel too far. Otherwise, I'd still do it this way all over again; 275/35R18's looks dinky.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
On The Tree
Joined: Mar 2009
Posts: 124
Likes: 0
From: Central NJ
35 gives the proper (stock) tire diameter with a 18" wheel. 40 series will give you a 1" larger tire diameter (about 4%), which may rub in the front and may also give you a problem with the speedo and/or computer.
Teching In
Joined: Aug 2010
Posts: 14
Likes: 0
From: Ft. Washington, Md
does any one have pics withe the 275/40/18 or 275/35/18 on 9.5 wheel on a T/A
Go 285/35, I have them on 9.5" forgestars on the front and 295/35's on 10" wide in the rear, fit perfect, I like a bit of tire out there to protect the lip of the wheel
Last edited by toadzq8; Apr 2, 2013 at 06:32 AM.
Yeah a 285/35/18(25.85"), is also within the stock height range and is recommended for a 18 x 9.5 wheel. The only down side is that you'll have less tire option and they'll cost more than the same tire in a 275/35/18.
Here's a few more stock tire sizes I forgot to add.
235/55/16 = 26.18"
215/60/16 = 26.16"
Here's a few more stock tire sizes I forgot to add.
235/55/16 = 26.18"
215/60/16 = 26.16"
TECH Fanatic
Joined: Dec 2005
Posts: 1,799
Likes: 1
From: USS Enterprise 1701
My suggestion would be to either run 275/35/18 or 285/35/18.
The 285/35/18 will fit... it will rub the plastic fender liner in the front just a little.
(I know because that size it what I as running.)
The 285/35/18 will fit... it will rub the plastic fender liner in the front just a little.
(I know because that size it what I as running.)
