Prius (2010-12) Fuel :: Changing Tire Size Effect On MPG / Handling / Traction?
Sep 29, 2012
My original Yokohama avid s33 is about ready to be changed. It now have over 42k on them. I think I can still stretch it before the winter starts. My OEM size are 195/65/15 and I'm thinking of getting the 205/65/15. According to Tire Dimensions Made Simple - Discount Tire my tire rotation will decrease by over 16 revs per mile. I know the side wall is going to be about a quarter an inch higher about an inch and a half bigger in circumference And the car is going to sit half an inch higher and a wider Width.
Looking for observation/s pertaining to performance, mpg, handling, traction, etc.
View 19 Replies
Advertisement
How the Prius calculates mpg based on miles driven then I need to create a formula that allows us to determine mpg when you change tire size.
We know the GenIII speedo reads between 1-2mph too fast but the ECU will continue to read exactly 2mph too fast despite tire size changes as verified by Scangauge and Torque app. So what is your mpg based on? Readings from the odometer, speedometer or something else?
If you change tire size then your miles driven is going to be altered. It's either going to be more accurate or less accurate depending on how this information is derived. If the miles driven is altered then so will be your mpg reading.
View 19 Replies
I've recently started to have issues where when I get up over 55/60 mph the traction control will engage and limit the acceleration of my 2009 prius. I took the car into my local Toyota dealership and they claim it is because of the size tire I have.
I recently purchased a set of Hankook Optimo H727 replacement tires. After having done my research (mostly on these forums) I decided to go with the P195/60R15 tire size. Now I have several reasons to believe that the dealership has misdiagnosed the issue:
1. There are loads of people on this site who have installed 195 size tires (and larger) without issue as far as I can tell.
2. The issue did not begin immediately after installing the new tires, but rather a couple months later.
3. My brother installed the same exact tires on his 2005 Prius and does a lot more freeway driving than I do and has not had an issue.
4. My understanding from reading here is that in some other countries Priuses come with 195 size tires stock.
View 7 Replies
If changing the rims on my '14 IS will affect the TPMS function? If so, am I able to transfer this on to my new set of rims? Also, is there a TPMS reset switch in the car?
View 3 Replies
If I shift from D to B at 60 mph, what effect does this have on mpg and rpm?
View 8 Replies
Exactly how much effect does weight have on MPG? I remember reading 1 MPG loss per 50 lbs of extra payload for the GII, is that about right for a GIII? (At that rate, I would get about 1.5 extra MPGs if I was as skinny as Tiffany Yep...)
For that matter, what weights do the EPA use for their MPG tests?
View 9 Replies
I am at the point where I am going to change my tires on my wheels. Currently running BBS RC's which are 8x17 ET32 with tires 225/45/17.
For those who are running wheels with such specs or more "exagerated" have you had your odometer recalibrated to respect the new rolling diameter change or not? If yes what was your easiest solution. I know depending on wheel/tire sizes, various factors can be affected including speed indication.
From all the websites I have seen and asked, I am told that I can go as less a 215 wide but not lower than 45 in "thickness" (if I stay in 17).
My objective is to of course remove rubbing during load and go a bit lower and therefore do not know if 215/45/17 will be enough of a change from 225/45/17.
View 4 Replies
I have a Hyundai Sonata w/ P215/55R17 tires.
I am almost due to get new tires and my husband says that we should switch the wheels and get regular tires, not the lower profile tires that were OEM w/ the vehicle. The current tires are expensive and regular tires would be less expensive in the long run. When I asked at the dealership 6 mos ago they said that it would not be good for the car and would adversely affect the performance. If I do change, what tire size (regular sidewall height) would be appropriate (and less expensive)to change to?
View 7 Replies
Been looking at a level for my truck and some new wheels and tires. If I change sizes, can the dealership recalibrate my Speedo and transmission shift points for me?
View 14 Replies
I have read many pages here on issue of leveling trucks.What concerns me most is the pics I see of the drive axles angles.
My question is if my stock 2005 runs a 265/70r17 tire and I level it with a 2 to 2.5" kit and change my rim and tire size to 28565r20 will this keep angles more level..
View 3 Replies
On a hot sunny day, occasionally I have to be stopped for extended periods with the A/C running which means the engine will come on for a few minutes out of every 10 minutes or so. to charge the traction battery. Engine comes on at 2 bars and goes off at 3 bars.
As engine efficiency at idle is low, would it be better to put it in D with the brake firmly pressed and push the accelerator so that the engine speed is in the high efficiency range so as to produce more charge for the fuel burnt and maybe also I could charge it to a few more bars on the battery indicator?
View 19 Replies
Is it true that a going from the OEM tire on the genII prius to larger 195/60/15 can cause or increase instability issues. I would think the point is to have wider tires to improve the stability...
View 10 Replies
I drove for a couple days last week and got 60+ mpg (city, well known commute, amenable for pulse&glide). I rotated tires (or rather wheels) this weekend with unchanged tire pressure (~44psi). Today I only got 50 mpg on the very same commute. Is this just a coincident?
View 5 Replies
Well, after the October snow storm where it took me 6 hours and alot of sliding around to get home, I decided to get all season tires with good snow traction. I picked up the Hankook Optimo H727 and had them installed at Walmart on 11/21/2011. Right away, my MPG dropped significantly.
View 8 Replies
I have 3.73 gears now on a lifted 02 excursion with the v10 and 315/75/16 bfg tires. Motor is stock. My first question is I get about 8mpg right now, what will the 4.56's do to that? I pull a 6500lbs trailer alot. Should I just try to find a 4.30 axle and swap them or just change gears?
View 14 Replies
1. What is the "stock" tire size for a 2000 F350 7.3 Super Duty 4x4 SRW?
2. Is there a way to adjust PCM to accommodate different tire sizes?
View 7 Replies
Recently read some suggestion gliding using N, will constantly switching between N and D affect any component wear and tear?
View 19 Replies
Does the prius v TMPS shows you the pressure in each tire or just give you a warning when one of the tire is low. How many MPG do we gain if we over inflate the tire to the max possible.
View 16 Replies
I just bought a 2010 Prius II and was wondering what size wheels will fit on it. What is the minimum offset I can go with a 17x8 without having the tire scrape the fender when I turn the wheel all the way to make u-turns?
View 2 Replies
My car's driver's side tire looks almost flat as one of my co-workers indicated first but the tire pressure light is NOT on. Should I worry about it and get it checked out?
View 19 Replies
My front right or left or both for that matter, (its hard to pinpoint the noise while driving) makes a clinking noise when I hit a good size bump. No noise at all on smaller ones?
View 2 Replies
