Volkswagen Owners Club Forum banner

1 - 20 of 36 Posts

·
Registered
Joined
·
52 Posts
Discussion Starter #1
Hope this not a re-post
Has anyone else noticed that the VW spedometers read high. I can drive at 70 plus mph on the freeway and I'm being passed by everyone ever grandpa and grandma? My mk5 TDI seems to have the same problem just not as bad.
I realise that the spedometer must never read low but I believe that mine is reading to least 5 mph fast. At highway speed. Is there any way foe VW to correct this Im sure there is if they want to.
 

·
Registered
Joined
·
3 Posts
It may not be the case but sometimes dealers will swap the wheels to another car at a customers request. At the factory the speedo has been calibrated for the wheels to which the car was specd. If the wheel size is changed the speedo reading will change. In Tampa the dealer was going to swap me 17' wheels for 16" to get me out the door.
 

·
Registered
Joined
·
52 Posts
Discussion Starter #4
Took my Rabbit in for the first service yesterday. And asked about the speedometer error.
There is a TSB (tech. service bulletin) #TSB 9006-01. For correcting this problem.
Any one else heard of this?
 

·
Registered
Joined
·
61 Posts
I would believe almost all cars display somewhat higher, "bumper to bumper" warranty will expire sooner too, correct?
 

·
Registered
Joined
·
32 Posts
Waaait, so if i drove my rabbit at the dealer with the ugly steelies that were 15in, then would it change alot with 17s?
 

·
Registered
Joined
·
7 Posts
bootmk said:
Waaait, so if i drove my rabbit at the dealer with the ugly steelies that were 15in, then would it change alot with 17s?
with the 15's there is a deeper side wall. like 55 series we'll say. most 17's start at 45 series and go down. i believe the numbers are millimeters. therefore most of the size you pick up in rim size you will lose in tire size. if the circumference of the tires are the same the speedo wont change. my .02.
 

·
Registered
Joined
·
61 Posts
Update- just got a notice for a class action lawsuit against Honda for an (up to 6%) rebate on mileage overcharges on just about every 02 on up model. I think they all do this, from my observation. It does not do me any good because it was purchased, rather than leased. However, if it was leased, I would get back that overage on the mileage penalty. Honda does not (nor do the others) care if you get less on trade in value on a 100K vs 94K car.

Six percent seems mighty lame from a company that prides themselves on engineering, so less than six percent, at least Wolfsburg is more accurate than Minato-ku!
 

·
Registered
Joined
·
22 Posts
I've already decided to go with a taller tire when I get to the point of tire replacement. Just to do a lazy mans fix of this. I figure it is off by 5 or 6 mph at an indicated 70 (I often drive by a Sherriff's speed indicator sign with cruise control set.) Then using this tool: http://www.rims-n-tires.com/info_specs.jsp I will decide on new tires or rims/tires combo to give me that 5 ish mph adjustment.

Being that the engine is a torquey beast, I believe that it will handle taller tires with ease.

Added fringe benefit *should* be a small MPG improvement.

Anybody know the offset of the magny cours alloy wheels?
 

·
Registered
Joined
·
12 Posts
I was test driving mine, and the salesman pointed out i was going 50 when i felt like it was 35ish.

I think another thing is you don't feel like your going as fast in a smaller vehicle opposed to a boat.

But about speedometers reading high, I figured some factory cars read slightly higher (not really 5, but at least 2 mph) to keep you going a little slower than you think.
 

·
Premium Member
Joined
·
1,273 Posts
If you want to check your Speedo. get on the hwy and hit the trip reset at a mile marker..When you get to the next one it should tick off 1 mile...got for several more and you will start to see if it's off and how this will eventually add the extra miles. Drive @ 60mph and you should hit a mile marker every minute.
 

·
Registered
Joined
·
487 Posts
Speedy07 said:
If you want to check your Speedo. get on the hwy and hit the trip reset at a mile marker..When you get to the next one it should tick off 1 mile...got for several more and you will start to see if it's off and how this will eventually add the extra miles. Drive @ 60mph and you should hit a mile marker every minute.
Good advice, especially useful in states where the mark every tenth mile. Which brings to mind, why exactly do some states feel the need to mark every tenth mile?
 

·
Premium Member
Joined
·
1,273 Posts
Good advice, especially useful in states where the mark every tenth mile. Which brings to mind, why exactly do some states feel the need to mark every tenth mile?
So the Police can nail ya! I don't Know...

Wheel selection should not change anything, the larger the wheel, the smaller the aspect ration (tire sidewall).
If you make sure you keep the same wheel diameter...plus up plus down etc..

JAy
 

·
Premium Member
Joined
·
566 Posts
If you want to check your Speedo. get on the hwy and hit the trip reset at a mile marker..When you get to the next one it should tick off 1 mile...got for several more and you will start to see if it's off and how this will eventually add the extra miles. Drive @ 60mph and you should hit a mile marker every minute.
lol good idea, i was gunna just pull over by a cop and ask him to radar me, but i like your idea more :D
 

·
Registered
Joined
·
1,703 Posts
I am going to try this today, because it seems like when I go 70 people in the slow lane past me. Or it could just be Massachusetts ;).
 

·
Registered
Joined
·
96 Posts
there's a reason why there's a higher readout. the accuracy of the speedometer reads anywhere between 1-7% higher depending on which car. this is used to offset any error in the speedometer. it's better to think you're going 65 actually going 63 than thinking 65 actually going 67
 

·
Premium Member
Joined
·
12,610 Posts
Today I was going 42 or 43 and the electric radar said I was doing 40-41.
 

·
ROC Moderator
Joined
·
2,637 Posts
Sweet, so I can go 100mph, get pulled over for goin 97 or so and not get busted for wreckless driving, all the while thinkin im goin 100...what a deal!
 
1 - 20 of 36 Posts
Top