At all speeds?

Jim

 

I paid chrysler to do it. They screwed it up, when going 60mph the speedo read 90mph. I don't know how they could make it so wrong but I toook it back and made them do it again now I think its right on.

 

Since you are in Canada, I bet it had to do with mph vs kph... 60 mi ~97 km...

 

Ya I was thinking it might have to do with that

 

I have 285's on mine and set the pedal around 75mph when I take it to work. If it's that far off it won't matter, cause these nut jobs on the highway in Nashville are still passin' me!!

 

Yes, at all speeds. You need to know your tire count(rev's. per mile) and change your pinion factor to match.

 

Thanks

Jim

 

how would I go about changing my speedo to read accuratley? I'm runnings 305's.

 

Needs to be recalibrated with a scanner or a tunner(ie superchips) that plugs into your datalink. You need to know the tire count if you use a scanner. The tire count is the revolutions per mile. You can find it at the tire manufactures web site, or use Toyo's web site.

 

ON a 97 call up Dodge and tell them the tire size. They will get you a new gear. Pre 98.5s use the speedo off of the transfer case with a speedo gear. Mine was under $15.00 from Dodge. It takes about 30 min. to change.

 

Only 98.5 and up use the computer.

 

I put in a Tru-Speed and it works well.

 

so in 2001.5s what was the stock size tire? were they 245s or 265s? I went too some 235s but was thinking going back too 265x75x16E

 

265/75-16

Dave

 

Sweet so going back to a touch wider tire wont mess my spedo up