Try the Nitto's if you have a 8" rim. The current 2000 model has a 255x65x15
(8" tire). I will move up to the 295x70x15 from Nitto (10" tire).
-----------------------------------------------------------------
Steven St.Laurent
Test Engineer
Test Branch, GSD,MCTSSA
MARCORSYSCOM, US Marine Corps
mailto:stlaurents@mctssa.usmc.mil (work)
mailto:Saint1958@home.com (home)
Office: (760) 725-2296
-----Original Message-----
From: Bob Tom [mailto:tigers@bserv.com]
Sent: Saturday, January 15, 2000 11:56 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: Upgrading to a larger tire
At 12:36 AM 1/16/00 -0500, you wrote:
>I own a 1997 Dakota Sport 4x2 with P215/75R15 tires. I would like to a
>P235/75R15 tire but was told by my Dodge dealer not to do it because it
>would affect the computer in the vehicle and the ABS brakes and overall
>performance of the truck. If anyone has upgraded their tires to a larger
size
>and experienced any problems with the above let me know. Thank you. (Rick)
Hey, Rick
I switched from the 215-75s to 235-75s in Mar. '98 and I've had no problems
whatsoever. I also changed the speedo pinion gear to have the speedometer/
odometer gauges read accurately. If your gear ratio is 3.55:1, the part
number for the speedo gear for the 235-75s is 520067633, last 2 digits
indicating the number of teeth of the pinion gear.
I can't say how the swap affects the computer. If it does, it's not
noticeable. The rear ABS work fine. Driveability changes would be similar
on any car that has gone through a swap to taller tires. Any cruise rpm
would
be equivalent to a vehicle with about a 3.50:1 gear ratio. The swap affects
acceleration in that you will have changed the number of tire revolutions
per mile.
In this case, you'll move a bit further with each revolution of the tires.
This
is the main reason why taller tires seem to act like higher gears
(numerically lower).
You'll may experience a small increase in gas mileage, assuming you don't
change your driving habits.
Hope this helps.
Bob. Southern Ontario, Canada.
'97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
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