04-29-2019, 10:53 PM
|
#1
|
|
Member
|
|
Join Date: Feb 2010
Location: 21401
Posts: 201
|
|
|
Member
Join Date: Feb 2010
Location: 21401
Posts: 201
|
Switching to 17’’ tires
Got a great deal on some new 2018 rims and want to mount them with some new tires on my 02’. Wondering what this might do to the speedo and gas mileage and anything else I might not be thinking of? Thanks in advance.
Sent from my iPhone using Tapatalk
|
|
 Reply With Quote
|
|
04-29-2019, 11:39 PM
|
#2
|
 |
Senior Member
|
|
Join Date: Sep 2017
Location: South SF Bay, CA
Posts: 1,758
Real Name: Tony (no surprise)
|
|
|
Senior Member
Join Date: Sep 2017
Location: South SF Bay, CA
Posts: 1,758
Real Name: Tony (no surprise)
|
It's the rolling diameter that effects speedo accuracy, with that the odometer too. One can have a smaller diameter tire with a larger wheel...
Weight impacts performance, in many respects, acceleration, braking, suspension response, fuel economy, et al. The location of weight matters too. Wanting 33s or thereabouts, I decided upon 17" wheels, heavier than the same in 16, but the tire on the 17" wheel has less mass than the comparable tire diameter for a 16-inch wheel. Mass closer to the hub is less impactful to performance... In the whole scheme of things minor, but for some, a consideration.
__________________
2000 Limited, E-locker
Maintenance/Build Thread
|
|
|
Reply With Quote
|
|
04-30-2019, 08:32 AM
|
#3
|
 |
Senior Member
|
|
Join Date: Dec 2013
Location: Covina, CA
Posts: 2,301
|
|
|
Senior Member
Join Date: Dec 2013
Location: Covina, CA
Posts: 2,301
|
Quote:
Originally Posted by wrpsuite
Got a great deal on some new 2018 rims and want to mount them with some new tires on my 02’. Wondering what this might do to the speedo and gas mileage and anything else I might not be thinking of? Thanks in advance.
Sent from my iPhone using Tapatalk
|
A few factors here, the rim size is not a consideration for speedo readings. Measure your current tire diameter and then the new tires. Your reading will be affected by the percentage of difference. You should also check the accuracy of your current tires using a gps of any kind. I went from 265/70-16 to 265/70-17 and actually got more accurate. The tire was a little taller, I don't remember by how much. More likely my 16" tires were just worn and the diameter difference was negligible.
__________________
1989 FJ62 5.3 Chevy, FZJ80 Axles, 4.88's with ARB.
2000 2wd runner, 4 cylinders, yes it IS slow.
1999 4WD SR5 Desert Dune 3.4 351K and counting.
2000 4WD sport 3.4 Elocker <--My son's but I still end up paying.
2001 2WD SR5 3.4 <-- My daughter's...see preceding line.
|
|
|
Reply With Quote
|
|
04-30-2019, 10:14 AM
|
#4
|
|
Member
|
|
Join Date: Jul 2015
Location: SF Bay Area
Posts: 73
|
|
|
Member
Join Date: Jul 2015
Location: SF Bay Area
Posts: 73
|
Quote:
Originally Posted by IBallEngineer
I went from 265/70-16 to 265/70-17 and actually got more accurate. The tire was a little taller, I don't remember by how much.
|
1" bigger diameter. Car sits 1/2" taller.
Speedo reads 3% slower.
Sent from my iPhone using Tapatalk
__________________
2002 SR5 Sport Edition; Thundercloud; All Stock.
|
|
|
Reply With Quote
|
|
04-30-2019, 10:21 AM
|
#5
|
 |
Member
|
|
Join Date: May 2015
Location: Massachusetts
Posts: 648
Real Name: Keith
|
|
|
Member
Join Date: May 2015
Location: Massachusetts
Posts: 648
Real Name: Keith
|
15",16",17",18" rim doesn't matter, its only tire diameter. If you take your current size tire and your desired new tire you can do height and revs per mile calculation on this very handy site -
Tire Size Calculator
__________________
*1999 3.4L, 4wd/5spd, swapped motor and trans, heavy use DD, seasonal rust proofing using WD-40 only
*2000 3.4L, 4wd/5spd, parts rig, picking the carcass
|
|
|
Reply With Quote
|
|
04-30-2019, 12:07 PM
|
#6
|
 |
Member
|
|
Join Date: Feb 2018
Location: DC
Posts: 287
|
|
|
Member
Join Date: Feb 2018
Location: DC
Posts: 287
|
Hope it's ok if I jump in with a related question.
I'm currently running 265/75s on 16" stock rims. If I were to switch to the same size tire on 17" wheels, would there be any change in performance? Any advantages / disadvantages?
__________________
2002 Limited 4Runner
2001 Jeep Cherokee
|
|
|
Reply With Quote
|
|
04-30-2019, 12:12 PM
|
#7
|
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
Quote:
Originally Posted by wrpsuite
Got a great deal on some new 2018 rims and want to mount them with some new tires on my 02’. Wondering what this might do to the speedo and gas mileage and anything else I might not be thinking of? Thanks in advance.
|
Need to know what your current wheel/tire setup is...
Quote:
Originally Posted by Jidaran
Hope it's ok if I jump in with a related question.
I'm currently running 265/75s on 16" stock rims. If I were to switch to the same size tire on 17" wheels, would there be any change in performance? Any advantages / disadvantages?
|
265/70-17 is almost exactly the same rolling diameter as 265/75-16. If you keep the same rolling diameter, performance will be very similar (unless you change types of tire at the same time).
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
|
Reply With Quote
|
|
04-30-2019, 12:51 PM
|
#8
|
|
Member
|
|
Join Date: Feb 2018
Location: DC
Posts: 287
|
|
|
Member
Join Date: Feb 2018
Location: DC
Posts: 287
|
Quote:
Originally Posted by phattyduck
265/70-17 is almost exactly the same rolling diameter as 265/75-16. If you keep the same rolling diameter, performance will be very similar (unless you change types of tire at the same time).
-Charlie
|
I saw that Tony alluded to the fact that a bigger rim with the same size tire would mean less weight, but that this change might be so small as to make no difference. I wasn't sure if there were any other differences - from a performance perspective or even as far as tire selection.
From what I've seen the 4th and 5th Gens generally come with 17" Rims, even thought the tires are close to the same size as the 3rd Gen. I wasn't sure if that shift was due to practical considerations, or if it was just for aesthetics.
__________________
2002 Limited 4Runner
2001 Jeep Cherokee
|
|
|
Reply With Quote
|
|
04-30-2019, 01:03 PM
|
#9
|
|
Senior Member
|
|
Join Date: Sep 2017
Location: South SF Bay, CA
Posts: 1,758
Real Name: Tony (no surprise)
|
|
|
Senior Member
Join Date: Sep 2017
Location: South SF Bay, CA
Posts: 1,758
Real Name: Tony (no surprise)
|
Quote:
Originally Posted by Jidaran
I saw that Tony alluded to the fact that a bigger rim with the same size tire would mean less weight, but that this change might be so small as to make no difference. I wasn't sure if there were any other differences - from a performance perspective or even as far as tire selection.
From what I've seen the 4th and 5th Gens generally come with 17" Rims, even thought the tires are close to the same size as the 3rd Gen. I wasn't sure if that shift was due to practical considerations, or if it was just for aesthetics.
|
Just to be clear, I didn't mean total weight, but the tire weight or weight further outward from the center or hub. An additional pound of weight at or around the hub will be less impactful then a pound further outward... People who are very weight-conscious consider such, usually track guys though. I do little things like this, often out of habit, understanding that the real world results are likely very little. There is a cumulative effect of such an approach, and weight considerations are always factors in my projects.
__________________
2000 Limited, E-locker
Maintenance/Build Thread
|
|
|
Reply With Quote
|
|
04-30-2019, 02:28 PM
|
#10
|
 |
Junior Member
|
|
Join Date: Jul 2015
Location: Denver CO
Posts: 11
Real Name: Joe
|
|
|
Junior Member
Join Date: Jul 2015
Location: Denver CO
Posts: 11
Real Name: Joe
|
Quote:
Originally Posted by Jidaran
Hope it's ok if I jump in with a related question.
I'm currently running 265/75s on 16" stock rims. If I were to switch to the same size tire on 17" wheels, would there be any change in performance? Any advantages / disadvantages?
|
I made this switch to 17 inch rims from my stock 16s, not a huge difference in performance, just notice I sit a little higher and it looks better. I can kind of feel bumps a little bit more, but that could be due to other factors like needing more air in my tires maybe...
|
|
|
Reply With Quote
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|
Linear Mode
