I upgraded my 14" stock hubcaps for a 17" Rixa Seca Gunmetal rims. I need to fix my Odometer and my Speedomter. Where do i go to get this done?
Ask the service manager at YOUR local Nissan Dealer and they will know who to send it to locally. In California when a dealer adds custom wheels of a different size to any car they are required by law to have the speedometer checked and calibrated and retain that certificate and submitt it to DMV.
Ask the service manager at YOUR local Nissan Dealer and they will know who to send it to locally. In California when a dealer adds custom wheels of a different size to any car they are required by law to have the speedometer checked and calibrated and retain that certificate and submitt it to DMV.
Really ??? I wasnt aware of that .....new one for me.
Do they tell you this and are you suppose to get a copy or they just do it automatically.
Hmm, I didn't know it was necessary to recalibrate everything w/o just guessing.
Um, here's what I think. I'd jus leave it alone. Keep in mind your speedo may be off a few %. Like at an indicated 60MPH, you're really going 63-65. IMO, it's helping retain the value of your car since the odometer is moving slower than the actual mileage
Um, the ECU is the last device to receive speed information. The speed sensor on the tranny sends the information directly to the speedometer then the speedometer relays it to the ECU. A resistor may ot may not help, but it seems like more effort than it's worth.
Really ??? I wasnt aware of that .....new one for me.
Do they tell you this and are you suppose to get a copy or they just do it automatically.
I got my rims and tires from Les Schwabs....
No, they telll you NOTHING, but go in there and tell them you got a traffic ticket for speeding just the speedometer stated otherwise and watch how fast they react.
Mind you this is only if the dealer changes tire sizes before selling the car. If you do something outside the dealer then you are responsable.
I have 17's on mine (konig) it's a 97 200sx se, i've experienced a 4-5mph lower reading on the speedo than actual speed. I know this because of various things. I use a dashboard WAAS enabled (highly accurate) GPS that gives me a true speed reading unless I'm in a tunnel.
I also use two independent g sensors and telemetry systems. And have driven it 90k mi so belive me, I know 17"s on this car.
If you are going 25mph on the speedo you are actually going 27-28mph.
As you increase speed the effect also increases so that say you're doin 65mph on the speedo, you are actually going about 71-72mph and the effect continues to get more pronounced the faster you go.
Nevertheless, unless you really wanna GPS you need to get it re-calibrated, it will save you headaches in the long run.
And as above (legality) if they stuck them on before you purchased it then they are liable for the re-calibration. (they may get around that somehow though, dealers are crafty and are willing to bet you don't wanna pay a lawyer).
Nevertheless, someone will inevitably post that I am wrong somehow even though I have 4 computers and 90k mi of driving with these tires when they roll on something smaller or larger or whatever, the point is it's physics man.
A larger wheel can roll less times per minute and cover the same or more (more) distance than a smaller wheel (which has to roll more times per minute to cover the same amount of distance) The down side to this is you WILL lose SOME torque. How much depends on wheel weight and the trans setup (gear ratio) you use. This also has the effect of lengthening the gear ratio (reducing torque as above) but also increasing the amount of time you can stay in each gear and increasing the speed at which the shift points lie.
All I can say is my car is very drivable and definitely not slow. And now the wheel well has something in it.
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He who claims he knows all is ignorant,
He who claims ignorance is on the path to enlightenment. Lao Tsu
Quick Recap.... Maybe I am dense...
Gradual gains in speed because of 17" Rims..
makes sense. How might that effect the milage traveled... Cuz since the 17" Rims 40 Series tires I have been thinking I am only getting 240 Miles to the tank. Sound a little low to anyone? 14Gallons - 240 Miles = 17.14 MPG .. not what supposed to get. Only engine mods are Short Ram Intake, Upgraded Plugs and Wires. Any Suggestions...... Links to Header and Cat Back exhaust for sale would be nice too...GA16DE 97 Sentra GXE.
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Hail to the SR20DET, Now That is a Family Car
You know what's strange, the GA16 seems to get worse fuel economy than the SR20. I got HEAVY N/A mods on my SR20 and I was able to pull off 33MPG Hwy. My Old GA could NEVER touch that. Alot of DET owners are claiming 28MPG. On the other hand, alot of GA owners are complaining about 21MPG or worse...
Anyway, back on subject, bigger wheel diameter will not increase fuel economy, if anything, the increased mass and moment of inertia will hurt the fuel economy. Lemme put it this way, it's like claiming bigger wheels will increase acceleration due to higher speeds at lower RPM. But keep in mind how much harder it is for the engine to turn a bigger wheel.
Yeah thats what I am talking about.. my car with 14" rims was getting like 33MPG then the 17's came on and I am getting like 14MPG...50% decrease... gotta be something wrong.. gonna change my fuel filter and run a tank or two.
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Hail to the SR20DET, Now That is a Family Car
It could also be that you are using more gas to get the car up to speed, with the heavy wheels it could be working your engine harder during acceleration. I can't see how the speedo would get messed up unless you got bigger tires to go along with the rims.
My new rims weigh less than stock.. by like half. But hey ... I think its my O2 Sensor. I will change that and see what that is all about. My car needs to be tuned..
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Hail to the SR20DET, Now That is a Family Car
you also have to think your rotory mass to move those suckers is more, you shouldnt loose gas mileage that much.. you have to do a tune up. there is another reason why you would have lost that much gas mileage.
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Originally Posted by hendrix
I can't wait until Hurrican Jamal sweeps up the east coast and steals the wheels and stero out of your car
true speed.....
Linear Mode
