Calesta

Wait for it...









OH MY GOD MIKE STARTED A TECH THREAD!

It's been a while...


So I've been taking a lot of road trips in the "new" family xB recently. I've got slightly larger tires than stock- 205/50-16 now over OE 185/60-15- so my speedometer is pretty much dead on with the GPS unit at all speeds, but the odometer is WAY off. I first noticed this when I took a road trip driving separately from the wife. The S2000 logged something like 253 miles covering the EXACT same route that the xB did (234 miles). We were never more than a few hundred yards apart from each other the whole way- same lane, same lane changes- basically followed the exact same route. I know the S reads mileage correctly when using the right size tires, so I started investigation:



The xB is showing a consistent difference between actual miles (shown on GPS) and the odometer. The GPS always reads 5.6% higher. This was counted over quite a few tanks of gas. On the plus side, my warranties will last longer- on the negative side, the car has more miles on it than the odometer shows. I just broke 60k, so that means I really have around 63k on the car (it had stock tires on it before I bought it). Oh well.

Given that my tires are 1.4% taller than stock (23.74in vs 24.07in), that means that xB owners running stock tires are actually traveling 4% farther than their odometers indicate.

Just thought I'd share.

So have any 1st gen xB owners experienced this? I know I'm not the only one on here with one.


Math:

car trip odometer = 251.6 mi
gps trip odometer = 265.6 mi
% difference over car trip odo = (265.6-251.6)/251.6 = 5.56%

stock tire diameter = 185*1.2/25.4+15 = 23.74in
current tire diameter = 205/25.4+16 = 24.07in
% difference over stock tire diameter = 1.39%

% true miles over in-car trip odo reported miles (OE tires) = 1.056*.986 = 1.041 = 4%

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AHHVTEC

umm. maybe she was spinning the tires in the s2000 lol

Calesta

Uh no. yu0 = fail. I was driving the S2000. You can't spin the tires on the highway in one anyway.

AHHVTEC

lol, but i kinda win because i just said to my self he is gonna respond with you fail lol

Calesta

Whatever. That really is ultra fail.

B

Is that gps unit known to be accurate? have you done the same test in the s2k?

|Chaz|

I want to know how the factory could have fucked up the odometer so badly... that's a significantly high discrepancy.

Calesta

It matches up perfectly with Google Maps for the same start and ending points and route. It's one of Garmin's current generation mid-range GPS units with the SirfStar III chip, so it should be good based on that too.

I haven't done the test exactly with the S2k, but given that I drove behind Katie the whole way, and that the mileage difference between the S's odometer matches up exactly with the difference in tire diameter between what I have on and what is equipped from the factory (about 3% smaller than OEM right now with tread worn down), I think it's pretty much right on the money. I almost never drive with the GPS- Katie keeps it for herself.

Yeah it's pretty high. The guys on the xB forum have been writing me back and telling me the same thing though- they're seeing over a 5% difference between car-measured distance and true distance. Crazy.

__________________
DO NOT PM me with tech questions! Use the forums!
Intercrew Auto Salon - (972) 485-8688

phyregod

Scam by scion to keep their resale up! Sue! lol

awptickes

Lol, everyone knows that the s2k doesn't have enough torque to spin tires on the highway.

Cal: The Fit had a class-action lawsuit for the opposite of this, Honda awarded an extra 300 miles on the warranty. Don't expect much.

That sucks though. Htf does it throw the odometer off, but make the speedo accurate? I always thought they were connected...

|Chaz|

I don't know if the accuracy of the odometer is off enough to make the accuracy of the speedo be off by a noticeable difference...

awptickes

4% is a big difference.

|Chaz|

Meh, only 2 mph difference while going 50. I don't think many people can judge a 2 mph difference.

Calesta

What's htf? I'm not worried about the warranty- just thought it was an interesting tidbit of information. I wonder if anyone has gone up to Scion about it though. Most Hondas do read more than they're supposed to too.

They are connected- but they are rarely calibrated to the same spec together.

K2e2vin

But after time, it all adds up.

|Chaz|

Oh I realize that. I was solely talking if a person could judge a 2 mph difference driving down the highway.

isore

htf = how the fuck. lol

Ethan

lmao wtf you doing 99.7mph in a xB for?

|Chaz|

because he can? The faster you go the better time you make... as long as you don't get caught.

Ethan

lmao... sir you stand correct!

phyregod

Tried some real speeding in my element.. It was scary as hell. Those things are not designed to do much over the speed limit. Straights were as expected.. corners were terrifying.

awptickes

And that's reason #2 why I didn't get one.

Calesta

Where did you see that?

Because I live in Texas and every road trip is a REALLY loooooooooong one. And because there was someone ahead of me by about a mile traveling at the same speed to pick up the cops for me. And because I was racing it on the road course. Yeah.

I couldn't bring myself to pick up an Element..

Ethan

so... whats that a fish finder beside the gps?

E_SolSi

if "fish" is code word for "cop"