• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech

Good tire size for 18x9 Rims

  • Thread starter Thread starter rblcollee
  • Start date Start date Mar 27, 2006

rblcollee

New Member
Oct 21, 2001
133
0
0
Lawrenceville GA
Mar 27, 2006
#1
  • Mar 27, 2006
  • #1
Thinking of getting 18x9 rims but not shure of what size tire to get.
 

2003gt

Member
Apr 27, 2003
290
0
16
Brandon, MS
Mar 28, 2006
#2
  • Mar 28, 2006
  • #2
i have 265/40/18 on my car now....and they fit and look great....might go slightly wider on the rear next time...275 probably, but 265 is right at home
 

rblcollee

New Member
Oct 21, 2001
133
0
0
Lawrenceville GA
Mar 28, 2006
#3
  • Mar 28, 2006
  • #3
Ok thanks! I was thinking about 275/40/18
 
R

Red Pony

Member
Dec 22, 2004
92
0
7
Chicago Area
Mar 28, 2006
#4
  • Mar 28, 2006
  • #4
Doesn't the 265 number represent how tall the tire is? I thought that the 40 refered to the width of the tire.
 

bigcat

start with the upper hole, and if more traction is
May 1, 2005
3,015
1
79
7200 feet
Mar 28, 2006
#5
  • Mar 28, 2006
  • #5
265 would be the width, 40 would be the sidewall ratio (heigth), and 18 is the rim diameter.
 

jwgroovin

New Member
Apr 4, 2005
97
0
0
Westminster, MD
Mar 28, 2006
#6
  • Mar 28, 2006
  • #6
rblcollee said:
Thinking of getting 18x9 rims but not shure of what size tire to get.
Click to expand...

255s up front and 275 on the rear are popular. I'm running 275/40r18s all the way around without problems...

John
 
G

gp001

Founding Member
Jun 30, 2001
4,401
0
66
So. Cal.
Mar 28, 2006
#7
  • Mar 28, 2006
  • #7
Here is some info I posted in another thread.........

A tire's numbers tell you the following: Section Width/Aspect Ratio Internal Construction Rim Diameter Service Info

Example: 295/35R19
Section Width = 295mm
Aspect Ratio = 35%
Internal Construction = R for Radial
Rim Diameter = 19"

To calculate the overall height you do the following:

Height of tire = (2 x sidewall) + rim diameter

Sidewall = ( Section Width/25.4) x (Aspet Ratio/100)

Since the section width is in mm we need to convert to inches, so we divide by 25.4
The aspect ratio is a percentage so we divide by 100

We can simplify the equation as:

Sidewall = (section width x Aspect ratio) / 2540

So the height of the tire becomes [2 x ((section width x Aspect ratio) / 2540)] + rim diameter

Ex.

Height = [2 x ((295 x 35) /2540)] + 19 = 27.13
 
M

marsbar

New Member
Dec 26, 2003
15
0
1
CHITOWN
Mar 29, 2006
#8
  • Mar 29, 2006
  • #8
275/40/18 falkens all around with 35mm offset. No problems.http://forums.stangnet.com/attachment.php?attachmentid=43463&d=1142809813
Click image for larger version Name: carcity 008gt.jpg Views: 152 Size: 62.7 KB ID: 43463
 
You must log in or register to reply here.

Similar threads

H
Best tire size for 91 Fox 18x9 wheels. On coilovers
  • hassler
  • Mar 25, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
11
Views
426
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 9, 2026
KRUISR
C
2003 Mustang GT - Rear Tire Size Question
  • Cassiebaebae
  • Jun 29, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • 2
Replies
38
Views
829
1996 - 2004 SN95 Mustang -General/Talk- Jul 6, 2026
Cassiebaebae
C
B
Tire size question 1986 gt hatchback
  • B0udreaux
  • Jan 12, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
589
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 17, 2026
B0udreaux
B
O
SOLD FS: 18" FR500 chrome wheels and Toyo tires
  • optionizerSS
  • May 21, 2026
  • Other Classifieds
Replies
1
Views
112
Other Classifieds Jun 2, 2026
optionizerSS
O
G
Fox Tire Size for 16" Pony Wheels on 1984 LX Convertible
  • gw7
  • Jun 24, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
104
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Saturday at 7:13 PM
Qtrhrse23
Q
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?