MPH and RPM

Reply Subscribe

Thread Tools

Search this Thread

Sep 29, 2009 | 11:30 AM

randy1kleeman

Thread Starter

New Member

Joined: 06-04-05

Posts: 62

Likes: 0

From: Tell City In

MPH and RPM

I was wandering if anyone knows why my MPH would be reading high and low, sometimes up to 10 over. If anyone could help it would be appriciated!!

Sep 29, 2009 | 11:45 AM

JROD38383

Member

Joined: 04-08-09

Posts: 318

Likes: 0

From: Nicholasville

do you have aftermarket tires that are a different size than stock ?

are you spinning in the rain lol

Sep 29, 2009 | 11:48 AM

brickerenator

Banned

Joined: 04-08-08

Posts: 7,576

Likes: 0

From: Thurmont, MD

Quote:

Originally Posted by JROD38383

do you have aftermarket tires that are a different size than stock ?

are you spinning in the rain lol

wat?

OP we need a little more info

Sep 29, 2009 | 11:51 AM

ShortStack

Senior Member

Joined: 07-16-08

Posts: 5,610

Likes: 0

From: Boynton Beach, Fl

He has the same problem i do...

Just normal driving... My MPH is 4 over what my actual speed is... Stock tire size all that jazz...

Sep 29, 2009 | 12:05 PM

conerboner

Senior Member

iTrader: (4)

Joined: 01-23-08

Posts: 3,360

Likes: 1

From: East Grand Forks, MN

I got pulled over and the cop said i was going 5 mph faster than my speedo said. I have 18's but the overall height of the tire is the same.

Sep 29, 2009 | 02:10 PM

brk_05

Member

Joined: 07-03-06

Posts: 257

Likes: 0

From: Pittsburgh, PA

Quote:

Originally Posted by ShortStack

He has the same problem i do...

Just normal driving... My MPH is 4 over what my actual speed is... Stock tire size all that jazz...

My 2006 SS/SC was the same. It read 3-4 MPH higher than actual at highway speeds. It also threw off the odometer.

Sep 29, 2009 | 03:26 PM

ShortStack

Senior Member

Joined: 07-16-08

Posts: 5,610

Likes: 0

From: Boynton Beach, Fl

^^ I wondered if it did or not...

Sep 29, 2009 | 07:46 PM

jmz250

Senior Member

Joined: 06-01-09

Posts: 628

Likes: 0

From: Mentor, OH

Quote:

Originally Posted by JROD38383

are you spinning in the rain lol

100 mph in first gear FTW

Sep 30, 2009 | 08:42 PM

randy1kleeman

Thread Starter

New Member

Joined: 06-04-05

Posts: 62

Likes: 0

From: Tell City In

Well all the info is there. It sometimes reads normal but most of the time it reads 5over/5under. Tires are the size of original ones, that wouldnt throw it off that much anyway even if they were .5 to 1 inch bigger. So does anyone have a solution besides taking it in to get looked at?