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Daddy-D
Gen III
 
1/10/2002
23:14:13
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 Subject: 2WD Alignment
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Message:
I recently got new tires (wonderful Pirelli
Scorpion Zero 255/60/15s); I had Big O tires
do the alignment at the same time, but the
truck feels wierd. I took it back, they said it's
within spec (I have their report), but I have my
doubts.
My Haynes book offers no specs. Below is
what Big O say are spec (in degrees):
Camber: -.01 - .09
Caster: 2.4 - 5.4
Toe: .03 - .13
Cross Camber: -.5 - .5
Cross Caster -.08 - .8
Total Toe: .05 - .25
Truck seems to wander - not track straight,
maybe a slight pull to the left.
Anybody have a factory book you can post the
specs for my truck? I appreciate all help.
'98 DakSport C/C 3.9 2WD A/T
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kotadude21
Dodge Dakota
JOIN HERE
1/10/2002
23:46:42
|  RE: 2WD Alignment
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Message:
I sorta had the same problem when i switched out my rims and tires. I went from 235/75/15 to 255/50/17
the wider tires seem to pull a lil bit like it's out of alignment
I guess it's just the wider tires in my case, don't know about yours.
did you go to a wider tire?
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Dave Mitchell
Dodge Dakota
JOIN HERE
1/11/2002
09:56:59
|  RE: 2WD Alignment
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Message:
The wide low profile tires will do so when there are depressions in the road surface, especially where traction devices have been used frequently. When the pavement is wet you can see the depressions I am talking about. The water will set in them looking like two parallel ditches where the majority fo drivers drive in the lane. The tires actually try to climb out of the depressions because the tread is not equally applied to the road surface. The flexing of the tire will effect the rolling resistance across the face of the footprint as a result and cause the "wandering" tire effect.
Try finding some freshly laid pavement surface where the road is very smooth and see if it does not go away.
My father noticed this years ago when he put wider tires on his truck. I'm not sure that radial ply rather than bias ply will make the problem more evident or not. I am thinking it may as radials flex side to side more than bias ply for better traction, they may increase the effect.
I would think light trusck tires would have less of a problem that say the Goodyear Eagle LS's that came on my truck, as the sidewalls usually have more plies and are considerably stiffer.
When I drove my truck off the lot the dealer had inflated the tires to the maximum on the sidewalls. That had a different effect... It felt like it was oversensitive in the steering until I lowered them to the specs in the owners manual addendum.
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Daddy-D
Gen III
1/11/2002
10:04:21
| RE: 2WD Alignment
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Message:
Yes, I did step up to wider (from 235/70/15)
tires.
The roads around the Seattle area are pretty
f*cked up with all those morons using
studded tires 4 months out of the year - really
chew up the roads. I have tried "virgin" roads,
with reduced effects. I guess I'll just have to
get used to it.
These tires are much firmer than the LSs - no
bobble.
'98 DakSport C/C 3.9 2WD A/T
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Broeheem
Gen III
1/11/2002
17:40:07
| RE: 2WD Alignment
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Message:
You're right, Daddy.... MUCH firmer. I went from the LS 255/65/16's to the Zero 255/55/18's, and there was a dramatic change in the way it felt. It's like I can feel EVERYTHING in the road now. It's a little annoying, but worth the handling improvement.
Patriot Blue 2001 SLT Plus Club Cab
4.7L./multi-spd auto/3.55 LSD
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Daddy-D
*GenIII*
1/12/2002
00:40:11
| RE: 2WD Alignment
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Message:
Heh - I had installed KYB MonoMax shocks
with the Eagle LSs. Even with the much-stiffer
valving, the truck bobbled and wobbled. That's
gone with tne Pirellis. Nice and firm...
'98 DakSport C/C 3.9 2WD A/T
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Dave Mitchell
Dodge Dakota
JOIN HERE
1/12/2002
10:37:36
| RE: 2WD Alignment
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Message:
The Good Year Eagle LS's are a Luxury Sedan tire, hence the LS, according to Good Year. That would explain why the truck rides so soft until you hit a mid size bump , then says "I'm a truck!"
The LS's are quiet, too.
But I lost some traction on a clover-leaf on ramp the other day in the rain. The limited slip differential went crazy on me as a tire broke loose and spun, then the other then back. Scared the sweet buh-Jeeesus out of my 19 year old daughter as the truck violently wagged its back end on the freeway until I let off the throttle. It made the girl tailgating me back off, though
I had heard the Eagles are good when new but the wet traction goes away as the tread rubber gets harder as it nears the carcass. I guess so!
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