Question about Toyota Tacoma

1 Answer

Have changed tire size from 15 31 10.5 to 15 235 and have a 7mph error on speedometer

Posted by on

  • Anonymous Oct 31, 2008

    if yours is like mine, stock tire size was 265-75-15. I shot mine with a radar gun and was 11mph off at 75mph. 75mph was really 64. I had put on cooper atr 225-75-15 per the lable on inside of door. vin number at dealer confirmes 265s. why toyota didnt put upgrade on sticker just cost me an extra 146.oo$ . tire dealer prorated 300 miles on tires at about $27.00. their computer didnt show a 99 prerunner. Being I bought it used I didnt know.you have to research every thing including tire sizes because of faulty door labels. I've still got that 15 year recall though! get ready to sray saltwater.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,450 Answers

You are wanting to correct the speedo?

the toyota dealer should be able to reflash the computer for your tire size and this will correct the speedo
or you can buy a programmer like a hypertech or superchips most of the power programmers give you option for tires

Posted on Sep 22, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The police officer said I was going faster than what my speedometer was saying I was doing.


Did you have stock size tires before and change it to a larger or smaller size? The change in tire size can alter the speedometer readings. Check out this website for tire size speed calibrations - http://www.roadkillcustoms.com/hot-rods-rat-rods/Speedometer-Calibration-Tire-Size-Change-Calculator.asp#axzz2ojsYwmsN

Aug 20, 2013 | 2005 Jeep Grand Cherokee

1 Answer

Beside 225/50/16 what other size can fit a 2002 Mercury Cougar


Your best choice is to use the DiscountTire.com website and use the optional tools available. You can enter your vehicle and the site can be made to do alternate tire sizes.

There are some choices on the left side of the home screen and you can even find out the true road speed versus speedometer readings if you use an optional tire upgrade.

Now there are several ways to change things. Width and sidewall profile both contribute to Revolutions per mile. My Mercury car came with 60 Series tires, changing to a 65 Series of the same width gave me a 5% boost in fuel mileage with a corresponding speedometer error.

You do have some limits, wheel rim width will not work on extreme tire changes. Different width wheels would be needed. You have to consider clearance issues between the tire and frame of the car on turns. Both the inside edges of the tire must clear the frame.

The total tire height reflects 1/2 the distance change below and 1/2 the change above the wheel rim. So ride height would change and wheel opening clearance would change.

You have many choices of tire size. In sidewalls, they make 55, 60, and 65 Series tires. In width, 225,235,245 and P metric. Use the Discount Tire site, maybe the Tirerack site and work with the numbers.

Go to a Tire shop and have then pull a 50 Series, 55 Series, and 60 Series.tire in the same width. You will be able to see for yourself what the numbers mean.

I would feel comfortable saying an upgrade to a 55 Series would be no problem. You should have a Label on the doorjam to show tire sizes and inflation rates.

Please rate my info.

Jan 18, 2013 | 2002 Mercury Cougar

1 Answer

My speedometer runs 5 miles to fast


need correct tire size......over or under sized tires will cause change in speed reading.....

Aug 17, 2012 | 1996 Jeep Grand Cherokee

3 Answers

My speedodemeter is off by 8 miles an hour could that be fix just by changeing out my transmission because the transmission doesn't shift right it takes a min.


Assuming you replace it with the same transmission it should be fine. If you've changed your tires to a larger or smaller size it can also effect your speedometer. If this is the case it can usually be corrected by replacing the speedometer cable with one for that particular combination. If your transmission isn't shifting right you should check the fluid level. Also check for any transmission leaks because those can effect the shifting as well.

Mar 02, 2011 | 1992 Chevrolet S-10 Blazer

1 Answer

CAN I PUT 225/60R/16 WINTER TIRES ON MY EQUINOX THAT TAKES 235/65R/16


You can but you will have some speedometer error and will use more fuel. The vehicle will also ride lower. There is a tire comparison chart on DiscountTires.com. You choose the original tire size and then enter your desired change of size. The chart will show your speedometer error at several speeds.

You can also look up tires on other online sites. The number of revolutions per mile is one measure and it is based on the overall circumference of each tire. If your original tire turned 630 times in a mile and your new tire turns 645 times a mile, every part that turns will be wearing out more for each mile and you will use more fuel with each mile driven. You will be recording more miles traveled on your odometer than you have actually driven.

Nov 22, 2010 | Chevrolet Equinox Cars & Trucks

2 Answers

I own a 2003 2500 HD Silverado with roughly 110K mi. I noticed my gauge telling me that I need to "change engine oil" one week after having oil changed! A day later I compared my GPS speed to my...


Hi, I think 2 things have happened. 1st, when your oil was changed, the technician did not reset the oil life back to 100%. This can be done by turning the key on, without starting the engine, consistantly push the accelerator to the floor fully, 3 times. At the last time, the oil life should reset to 100%. The other issue sounds like a different size tire may have been installed, causing the speedometer to read incorrect. A dealer should be able to reprogram the computer to accept the correct size tire, therefore making the speedometer read correctly. This should not be an issue, unless the current tire size is not accepted in the computer, at this point, you ned to change to the correct size tire, or realize you may be off on the speedometer, and accomodate for your speed accordingly. Good luck...Coop

Oct 03, 2010 | 2003 Chevrolet Silverado 2500HD

2 Answers

Next size tire


the tire sizes you can use should be on the driver side door.

May 15, 2010 | 1998 Honda Accord

1 Answer

I have a 2007 Ford Explorer with a speedometer error


Changing tires to another size than what was originally sent on the vehicle can change the accuratcy of the speedometer. To fix this requires changing the gear where the speedometer enters the transmission. The gears you change are probably a dealer item and they could tell you which one you need.

Dec 04, 2009 | 2007 Ford Explorer Eddie Bauer

1 Answer

Speedometer off due to tire size change and need to reset.


I dont think there is a way to reset the speedometer except installing the proper size for your particular vehicle. I made the same mistake one time . I installed larger tires deliberately ti make the car higher. It didn't work. it was rubbing against the metal when I hit a bump in the road. I had to install the proper recommended tires.

Apr 15, 2009 | Ford Explorer Cars & Trucks

1 Answer

Speedometer error on 1993 Plymouth Voyager with 3.3L V6


Have you called transmission place? Did they also install it? Ask them if they changed speedometer adapter, and mention the difference in speed.

Jan 22, 2009 | 1997 Plymouth Voyager

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

490 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...