Tires: 185/65 or 195/65??? - Fuelly Forums

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

Reply
 
Thread Tools Display Modes
 
Old 02-01-2011, 11:15 AM   #1
Registered Member
 
Join Date: Aug 2007
Posts: 4
Country: United States
Tires: 185/65 or 195/65???

Its time for new tires for my 2001 Altima, currently have 205/60/15 but want to switch to a narrower tire for better mpg. Looking at 2 different sizes 185/65 and 195/65. Which would be the better tire for fuel efficiency? 185/65 is narrower but its also shorter than the 195/65.

For reference

205/60/15 is 24.7" OD
195/65/15 is 25" OD
185/65/15 is 24.5" OD
__________________

justinswrx is offline   Reply With Quote
Old 02-01-2011, 11:36 AM   #2
Registered Member
 
GasSavers_BEEF's Avatar
 
Join Date: Apr 2008
Posts: 1,831
Re: Tires: 185/65 or 195/65???

realize that it may mess with your handling too. has nothing to do with fuel economy but you still have to have drivability of the vehicle in order to be safe. you can buy a lot of gas for the price of one repair after sliding off the road.

something to think about.
__________________

__________________
Be the change you wish to see in the world
--Mahatma Gandhi



GasSavers_BEEF is offline   Reply With Quote
Old 02-01-2011, 02:20 PM   #3
Senior Member
 
Join Date: Jan 2012
Posts: 138
Country: United States
Re: Tires: 185/65 or 195/65???

how about the same size but in a llr tire? that way the handling and diameters will stay the same but you should see the mpg increase.
kit352 is offline   Reply With Quote
Old 02-01-2011, 03:05 PM   #4
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: Tires: 185/65 or 195/65???

How is your Altima's gearing?

The small difference in tire sizes won't really make an appreciable difference in FE. I'd stick with the original size and try to get something that takes higher pressure and has longer treadwear.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 02-01-2011, 05:49 PM   #5
Registered Member
 
cat0020's Avatar
 
Join Date: Jun 2008
Posts: 278
Country: United States
Re: Tires: 185/65 or 195/65???

Anyone know how much weight difference there is in each tire?

Does all that rotational weight difference effect the fuel economy?
__________________
Master your environment and you will survive just fine.
Chances favor the prepared mind.
cat0020 is offline   Reply With Quote
Old 02-01-2011, 06:07 PM   #6
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: Tires: 185/65 or 195/65???

Quote:
Originally Posted by cat0020 View Post
Does all that rotational weight difference effect the fuel economy?
It's my opinion that it doesn't have much effect with a FE-conscious driver. The loss doesn't happen until you brake; energy put into rotating weight while accelerating is stored the same as in a flywheel.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 02-01-2011, 06:54 PM   #7
Senior Member
 
Join Date: Jan 2012
Posts: 138
Country: United States
Re: Tires: 185/65 or 195/65???

the llr weights for his size are 22lbs for the 205 and 20lbs for the 195. Its been my growing opinion that the llr tires are almost always heavier from there normal tread equivalants. Im not sure if its due to the longer lasting compounds or maybe to help the mpg. I just swapped a set of llrs on my car and they weighed 2lbs more than the oems ones.
kit352 is offline   Reply With Quote
Old 02-01-2011, 07:01 PM   #8
Registered Member
 
Join Date: Apr 2008
Posts: 689
Country: United States
Re: Tires: 185/65 or 195/65???

As close as the sizes of the three tires are I don't think it will change the handling or FE either one much. The only difference you should see is maybe just a little bit looser in cornering with the slightly higher sidewall profile of the 65's vs. the 60's. My '88 Escort was equiped with with 165/80/13's from the factory, but I have gone to a 14" wheel in the past few years and been running 185/75/14's and 185/70/14's without any issues with handling.
__________________
Hipermiler
#47 on my way to #1
Ford Man is offline   Reply With Quote
Old 02-01-2011, 07:16 PM   #9
Registered Member
 
Join Date: Aug 2007
Posts: 4
Country: United States
Re: Tires: 185/65 or 195/65???

OE size for my Altima is 195/65, I don't think I would be to worried about dropping down to a 185 and having handling issues.

And as far as the weight difference, on a dissapointing note I actually switched to a light weight forged aluminum wheel that was 9lbs lighter per wheel than the stock steel wheel with hubcap and so no significant difference in fuel mileage. Same size wheel and tires
justinswrx is offline   Reply With Quote
Old 02-01-2011, 10:42 PM   #10
Senior Member
 
Join Date: Jan 2012
Posts: 138
Country: United States
Re: Tires: 185/65 or 195/65???

its been long debated as too how much of an effect on mpg rotational weight has. Im begining to see it has little. seems like a smooth hubcap surface has greater effects on it.
__________________

kit352 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
Basic Stats poorboymeyer Fuelly Web Support and Community News 2 09-22-2009 09:19 AM
Conservative/Liberal Wyldesoul General Discussion (Off-Topic) 5 03-23-2009 08:32 AM
More Consumers, Workers Shoplift as Economy Slows HondaTorneoSiR Automotive News, Articles and Products 2 06-19-2008 04:20 PM
Performance Underdrive Pulleys? cfg83 General Maintenance and Repair 10 09-08-2007 09:04 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 04:15 AM.


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