Miss matched tires - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 02-16-2007, 06:08 AM   #1
Registered Member
 
zpiloto's Avatar
 
Join Date: Mar 2006
Posts: 1,225
Country: United States
Miss matched tires

I just notice that I have a miss matched set of tires. The fronts are 185/65/14 with max pressure of 35 psi and the rear are 185/60/14 with 44 psi max. I'm thinking that I need to switch that around and have the smaller higher psi tires in the front for aero and rolling resistance. I dought that there would be much difference but want to here the groups thoughts?
__________________

zpiloto is offline   Reply With Quote
Old 02-16-2007, 06:14 AM   #2
Registered Member
 
omgwtfbyobbq's Avatar
 
Join Date: Jul 2006
Posts: 1,516
Country: United States
I don't think it makes much of a difference economy wise, but I generally put the higher pressure tires in front since that's where most of the weight/wear is, and the lower pressure tires that I'm inflating to 15-20psi above sidewall go in back. More for safety than anything else.
__________________

__________________
Quote:
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.
omgwtfbyobbq is offline   Reply With Quote
Old 02-16-2007, 09:44 AM   #3
Registered Member
 
Join Date: Oct 2006
Posts: 557
Country: United States
Since both the Kia and Toyota are small FWD with a forward weight bias, I'd put the deeper tread tires on the rear.
The greater weight on the front will reduce the hydroplaning tendency while the lighter rear will benefit from the deeper tread reducing the same tendency at that end.
If both sizes have about equally deep tread, then the smaller of the two pair on the front will drop the nose for marginally better aerodynamics. Only about 3/8 inch difference in axle height with the 185-60 ~ 65 sizes mentioned.
As a benefit in your case the smaller ones for the front have a higher max pressure rating.
Lug_Nut is offline   Reply With Quote
Old 02-16-2007, 11:04 AM   #4
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
Have you factored in the slight gearing advantage with the taller tires on front?

Never any simple answers, eh?
MetroMPG is offline   Reply With Quote
Old 02-16-2007, 01:40 PM   #5
Registered Member
 
zpiloto's Avatar
 
Join Date: Mar 2006
Posts: 1,225
Country: United States
Quote:
Originally Posted by MetroMPG View Post
Have you factored in the slight gearing advantage with the taller tires on front?

Never any simple answers, eh?
Kind of though of that but could not figure out if it really matters if it's on the front or the back? I guess the only way to know for sure is test and that too much of a hassle with the make shift wheel skirts. I've got some moon discs coming I'll swap um around after that. I think I want the higher pressure in the front.
zpiloto is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Feature: Loan and lease cost labrie Fuelly Web Support and Community News 1 02-08-2012 02:12 AM
More fun on FUELLY brytrkr1 Fuelly Web Support and Community News 3 12-06-2009 11:41 PM
Basic Stats poorboymeyer Fuelly Web Support and Community News 2 09-22-2009 09:19 AM
Newb FAQ Red Tick General Fuel Topics 4 06-15-2006 02:34 PM
MetroXFi changed his name! SVOboy General Discussion (Off-Topic) 26 04-09-2006 07:38 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.