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Old 11-11-2017, 03:45 PM   #27 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
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2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
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Quote:
Originally Posted by mazdamx640 View Post
Finally got tires https://m.tirerack.com/tires/tires.j...omCompare1=yes
But I didn't pay $250 each I got a lightly used set on Craigslist with about 75% tread left for $100
They're what I run on my truck. But MPG is better with the closed shoulder A/S model. I lost .75-1.00 to annual average, easily.

Be sure to check date code on tires. Five or more years (seven) is getting near end.

Biggest problem with pickups is steering.

Bilstein 4160 shocks, first, to help it track.

Then, from new steering column shaft, all the way out to new tie rods.

All the aero in the world won't offset "wander".

Pickups have bad road feel, new. And being to read the road and adapt is big. One needs to be able to distinguish between road problems and wind problems.

A pickup where the driver can't make these distinctions can't accurately tune the suspension, which they all need. They'll go down the highway sawing the wheel and the truck is at mercy of ruts and adverse wind. Bye-bye margin. It's all sucked up as extra HP demand, whether at low speed (rolling resistance) or high speed (aero resistance).

IOW, there's no way to get a clean baseline.

Tire pressure according to Load, alignment and no brake drag are great. But if one wants best MPG, it's steering first, suspension tuning second, and aero last.

Addco and Helwig both make replacement anti-roll bars. Is there one on rear?

Sort out what you'll do with drivetrain, first. Because after zeroed tracking problems comes wind effect on body. Where some (possibly) different anti-roll bars will isolate steering from crosswind.

The aerocap WILL increase sail area.

Load the truck, and a tired old front end will steal your efforts.

.
__________________
2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
11-cpm solo & 19-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
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