So what would I go with if I have 245/40ZR18s? Would I go with 235 or 255?
Seems like I'd be better off going lower right because it would make my
speedo read a little fast instead of being a little slow? Thanks for the
help.
----- Original Message -----
From: "Kenneth Eng" <keng@novadigm.com>
To: <dakota-truck@dakota-truck.net>
Sent: Thursday, June 13, 2002 3:17 PM
Subject: DML: RE: PCM question
>
> Eric,
>
> The only factor that will affect your speedo reading is the circumference
of
> your tires. The size of the rim has no affect if you manage to maintain
the
> circumference of the factory supplied tire. The PCM is programmed at the
> factory for the specific tire that is delivered with the vehicle. The PCM
> is also configured to accept other tire sizes. However, these tire sizes
> will only be the ones that are available for the Dak from the factory.
> These will include the P215, P235, P255, RT tires, and the 31" ones on the
> 4x4. If you upgraded to a tire whose size is not one of those listed in
the
> PCM, you will then need to select one that is closest in circumference to
> the ones you installed. The PCM will need to be reprogrammed by your
> dealer.
>
> HTH,
> Ken
>
> -----Original Message-----
> From: Eric Jerman [mailto:ejerman69@hotmail.com]
> Sent: Thursday, June 13, 2002 2:50 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: PCM question
>
>
>
> Ok,
> I keep seeing posts on here about a 3.91 gear upgrade...and from what I
> understand going from 15" to 18" rims will cause a change in gear
ratio...do
> I also need to reset my PCM and if so, how do I do this? Will that
correct
> the difference in my speedo?
> Eric Jerman
>
> ----- Original Message -----
> From: <SEMIHEMI01@aol.com>
> To: <dakota-truck@dakota-truck.net>
> Sent: Thursday, June 13, 2002 11:30 AM
> Subject: DML: Rice for Breakfast.
>
>
> >
> > Hey Guys,
> > Can you believe a kid in a low rider Toyota Camry wanted to try on
the
> > Dak this morning from a light. I let him have the first run by 2 car
> lengths
> > just to make him feel good. Never even made positive manifold pressure.
> Then
> > at the next light, I showed him what the SEMIHEMI could really do. He
was
> 2nd
> > gear history. Damn, I LUV IT. Bill
> >
> > SEMIHEMI01@AOL.COM> KB SuperCharged, 4.7L, 2001, QC,
> > <A HREF="http://hometown.aol.com/semihemi01">the "DAK",</A> <A
> > HREF="http://southernmopar.org">SouthernMopar</A>
> >
>
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