texashuntingforum.com logo
Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
ESmith_10, tylerbouyer, Dn1047324, BeeMan, Senob
67281 Registered Users
Top Posters(All Time)
dogcatcher 104,072
bill oxner 73,335
stxranchman 56,484
SnakeWrangler 53,612
RKHarm24 44,585
rifleman 44,451
BMD 41,091
Gravytrain 39,850
Facebook
Forum Statistics
Forums45
Topics435,838
Posts6,555,373
Members67,281
Most Online19,184
Feb 5th, 2020
Print Thread
Tire aspect ratio #7640456 10/24/19 01:44 AM
Joined: Feb 2008
Posts: 245
R
rowdy Online Content OP
Woodsman
OP Online Content
Woodsman
R
Joined: Feb 2008
Posts: 245
Wanting info/advice regarding tire aspect ratios. I currently run Cooper STT Pro’s in 295/60/20 on my 2008 Super Duty. Besides a slightly different look, and I’m not sure I can even tell the difference, would you recommend a ratio of 55, 60, or 65? I want to stay with the same tire. Just trying to understand the advantages and disadvantages of each. If there are any.


Moos Firearms
coachmoos at hotmail.com
Re: Tire aspect ratio [Re: rowdy] #7640504 10/24/19 02:29 AM
Joined: Feb 2010
Posts: 6,550
J
jhenderson Online Content
THF Trophy Hunter
Online Content
THF Trophy Hunter
J
Joined: Feb 2010
Posts: 6,550
Easiest way to explain it.

The middle number is a percentage of the first. Now the sidewall height is 60% of the width(295mm). You can change many different ways but if you want same height or width or bigger or smaller it all comes into play.

In theory a 55 is shorter, 65 is taller but it’s the percentage of the width. So going skinnier to a 275 or something you may not necessarily be going taller or shorter depending on aspect ratio.

Re: Tire aspect ratio [Re: jhenderson] #7640531 10/24/19 02:59 AM
Joined: Feb 2008
Posts: 245
R
rowdy Online Content OP
Woodsman
OP Online Content
Woodsman
R
Joined: Feb 2008
Posts: 245
Do you feel there is a difference in ride, performance, etc between any of them given that I want to stay with a 295 20” tire? I guess I’m trying to find out if the differences are just cosmetic or not.

Last edited by rowdy; 10/24/19 03:07 AM.

Moos Firearms
coachmoos at hotmail.com
Re: Tire aspect ratio [Re: rowdy] #7640624 10/24/19 10:40 AM
Joined: Oct 2009
Posts: 8,170
W
wp75169 Online Content
THF Trophy Hunter
Online Content
THF Trophy Hunter
W
Joined: Oct 2009
Posts: 8,170
Going with a taller tire (295-65-20) will give you a slightly better ride. It will also be slightly softer in the corners if you don’t run the designated air pressure on the tire. Many tire shops put less air pressure in them than is needed for towing/hauling. Bottom line, going with the taller tire and correct air pressure you should be very happy.

Going shorter to the 55s will result in a worse ride and possible damage to the wheel of your truck on potholes, curbs, rocks, etc. unless you’re wanting to lower your truck for whatever reason people do that I wouldn’t go this route.

Slightly taller tires generally look better. Grossly taller tires seldom does.

Re: Tire aspect ratio [Re: rowdy] #7640785 10/24/19 02:17 PM
Joined: Oct 2004
Posts: 34,168
R
redchevy Online Content
THF Celebrity
Online Content
THF Celebrity
R
Joined: Oct 2004
Posts: 34,168
If you keep the first number (295) the same, a bigger second number (55, 60, 65) will be a taller tire.


It's hell eatin em live
Re: Tire aspect ratio [Re: rowdy] #7640787 10/24/19 02:19 PM
Joined: May 2013
Posts: 3,040
CharlieCTx Online Content
Veteran Tracker
Online Content
Veteran Tracker
Joined: May 2013
Posts: 3,040
I can never remember how to do the metric sizing BS... I've found it easier to use something like this that shows you the difference via a picture. There are some others that also show the side view if you want to see width differences.

https://www.discounttire.com/learn/tire-size-calculator


Kel-Tec RFB + Griffin Sportsman Ultra Light 300 + Pulsar Apex XQ-50
M&P-10 + AAC Cyclone
Remy 700 + Leupold VX3 3.5x10x50 CDS
Re: Tire aspect ratio [Re: CharlieCTx] #7641330 10/25/19 12:41 AM
Joined: Feb 2008
Posts: 245
R
rowdy Online Content OP
Woodsman
OP Online Content
Woodsman
R
Joined: Feb 2008
Posts: 245
I appreciate the info from everybody. Decided to go with 295/65/20.


Moos Firearms
coachmoos at hotmail.com
Re: Tire aspect ratio [Re: rowdy] #7642025 10/25/19 05:50 PM
Joined: Jul 2005
Posts: 1,672
S
Stump_jumper Online Content
Pro Tracker
Online Content
Pro Tracker
S
Joined: Jul 2005
Posts: 1,672
The diameter calculation to inches is easy. 295/25.4 x aspect ratio x 2 plus rim diameter = overall diameter in inches. 295/25.4 = 11.615 x 2 = 23.23 x. 65 = 15.1 + 20" = overall diameter of 35.1". 25.4 is the number of MMs in an inch.


2017 Tundra 5.7 CM 4x4
2006 Champion 2200 Bay Boat
Previous Thread
Index
Next Thread

© 2004-2019 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide
Powered by UBB.threads™ PHP Forum Software 7.7.3