Speedo doesn't work after wheel swap

Tombonombona · 05-15-2017, 07:07 PM

So what I'm curious is there anyway to reprogram the computer or sensors or anything to accommodate the bigger tire?

OptionZero · 05-15-2017, 07:46 PM

That "tire person" should be fired. Probably wanted to make the sale on something in stock on the spot instead of doing more work

OptionZero · 05-15-2017, 07:47 PM

Quote:

Originally Posted by Tombonombona

So what I'm curious is there anyway to reprogram the computer or sensors or anything to accommodate the bigger tire?

Its not just the tire height, its the difference in tire height

get tires that fit

Tombonombona · 05-15-2017, 08:22 PM

Quote:

Originally Posted by OptionZero

Its not just the tire height, its the difference in tire height

get tires that fit

These ones fit perfectly. I'm trying to find a simple option that will allow me to use the still next to new $1300 rear tires that I already have. So if the only advice you can say is get new tires, I'll gladly take your donations.

OptionZero · 05-15-2017, 08:55 PM

You are assuming there is a simple solution

Sell your tires to a GTR owner

Rusty · 05-15-2017, 09:47 PM

Looking at your tire size specs.

275/35-20. 27.6" diameter.
315/35-20. 28.7" diameter.

You're over an inch difference in height. .7" is about the limit the you can run without the lights coming on. Don't know why you didn't have problems before.

OptionZero · 05-15-2017, 11:21 PM

Jesus that rear is ridiculous. Monster truck status.

BGTV8 · 05-16-2017, 06:50 AM

Has your car received a software update at the stealership since the last summer ??

Either that or marginal wheelspeed sensors is the only source of problems

Tombonombona · 05-16-2017, 07:57 AM

Quote:

Originally Posted by BGTV8

Has your car received a software update at the stealership since the last summer ??

Either that or marginal wheelspeed sensors is the only source of problems

Car hasn't been back to the stealership since I bought it in 2012. If there is any update, might it affect my tune?

Rusty · 05-16-2017, 11:21 AM

Quote:

Originally Posted by Tombonombona

Car hasn't been back to the stealership since I bought it in 2012. If there is any update, might it affect my tune?

If you have a tune and take the car back to the dealer. They do a flash up date. Your tune is gone. You have to remove the tune to save it before you take the car in. Or TELL them DO NOT FLASH THE COMPUTER! Alot of times, they don't listen to you anyway and flash it.

Tombonombona · 05-17-2017, 11:55 AM

So for an update. After about three days of driving with no speedo and other goodies that come with. Engine threw the P0500 vehicle speed sensor malfunction... think something could actually been wrong with the sensor or is this just a by product of the bigger wheels?

Ghostvette · 06-15-2017, 02:11 PM

Quote:

Originally Posted by SouthArk370Z

My guess is that one or more of the speed sensors is aligned so it just barely works with the stock wheels. Something about the new wheels disturbs the magnetic field enough to mess up the sensor signal. It may help to move the sensor(s) a little closer to the target.

Quote:

Originally Posted by Tombonombona

So for an update. After about three days of driving with no speedo and other goodies that come with. Engine threw the P0500 vehicle speed sensor malfunction... think something could actually been wrong with the sensor or is this just a by product of the bigger wheels?

If you didn't do what SouthArk suggested, do that. Otherwise, find out what wheel speed sensor went bad and replace it. I suspect what you will find is something knocked the wheel sensor out of alignment.

Not to be a difficult person, but did you even look at the sensors? Hory chit batman, if all that stuff wasn't working on my car, I'd have it up in the air, checking for issues, not continuing to drive it with a non-functioning ABS and speedo.... can you say 'LAWSUIT' if you had been in an accident? Great googly moogly dude, fix your chit... don't post on the inter webs that you are continuing to drive with stuff not working right...

ChaseZ · 06-16-2017, 04:25 AM

That's not even close to fitting 'perfectly'. Unless there is a difference between Saskatchewan perfect and everywhere else.

Whether you want to hear it or not the answer is get tires that fit.

For reference, your front tire does in fact fit pretty much perfectly. Your rear tire is over 2" taller. That is a massive difference. Get new rears and put the current ones in a tractor or something. That's about all they are good for.

JARblue · 06-16-2017, 04:50 AM

Quote:

Originally Posted by Ghostvette

continuing to drive it with a non-functioning ABS and speedo.... can you say 'LAWSUIT' if you had been in an accident?

His insurance company won't pay a dime if they find this thread

05-15-2017, 07:07 PM	#16 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 13	So what I'm curious is there anyway to reprogram the computer or sensors or anything to accommodate the bigger tire? __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

05-15-2017, 07:46 PM	#17 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,235 Drives: 15 370Z Nismo 6MT Rep Power: 214100	That "tire person" should be fired. Probably wanted to make the sale on something in stock on the spot instead of doing more work __________________ OptionZero Build Thread

05-15-2017, 08:55 PM	#20 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,235 Drives: 15 370Z Nismo 6MT Rep Power: 214100	You are assuming there is a simple solution Sell your tires to a GTR owner __________________ OptionZero Build Thread

05-15-2017, 09:47 PM	#21 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,217 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Looking at your tire size specs. 275/35-20. 27.6" diameter. 315/35-20. 28.7" diameter. You're over an inch difference in height. .7" is about the limit the you can run without the lights coming on. Don't know why you didn't have problems before. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

05-15-2017, 11:21 PM	#22 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,235 Drives: 15 370Z Nismo 6MT Rep Power: 214100	Jesus that rear is ridiculous. Monster truck status. __________________ OptionZero Build Thread

05-16-2017, 06:50 AM	#23 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,514 Drives: 09 Nissan 370Z M6 Rep Power: 39973	Has your car received a software update at the stealership since the last summer ?? Either that or marginal wheelspeed sensors is the only source of problems

05-17-2017, 11:55 AM	#26 (permalink)
Tombonombona Base Member Join Date: May 2012 Location: Sk, Canada Posts: 159 Drives: 2012 370z Mag Black Rep Power: 13	So for an update. After about three days of driving with no speedo and other goodies that come with. Engine threw the P0500 vehicle speed sensor malfunction... think something could actually been wrong with the sensor or is this just a by product of the bigger wheels? __________________ Tom B. Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno 2004 Subaru STi **SOLD WRITTEN OFF**

06-16-2017, 04:25 AM	#28 (permalink)
ChaseZ A True Z Fanatic Join Date: May 2016 Location: Calgary Posts: 3,799 Drives: 16 370z Rep Power: 94683	That's not even close to fitting 'perfectly'. Unless there is a difference between Saskatchewan perfect and everywhere else. Whether you want to hear it or not the answer is get tires that fit. For reference, your front tire does in fact fit pretty much perfectly. Your rear tire is over 2" taller. That is a massive difference. Get new rears and put the current ones in a tractor or something. That's about all they are good for. Last edited by ChaseZ; 07-09-2017 at 07:23 PM.

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