Tires: My Story - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 7 (permalink) Old 09-28-2008, 02:11 PM Thread Starter
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Tires: My Story

bought the truck used
44,000 miles

had General AmeriWay on it, 235/85R16
tires just SUCKED. No traction in the rain, not much more on dry pavement. Flat spotted one keeping from pegging a nerd pulling out of a McD's

Dunlop Rover RVxt's 235/85R16
good traction in the rain, fair traction in the snow (severe snow rated... yeah, but hardpack ice was a different story... slid through several intersections in the winter).

Fuel MPG virtually identical between the two, around 13.5mpg.

Dunlops gave up early, at around 35k (still had tread, just no traction)

Wrangler Silent Armor 265/75R16
here's where the fun started.
mileage dove off to around 12mpg
BUT..
the truck never handled, rode, or gripped as well.
Very confident driving.

Enter ULSD
mileage dropped again to just shy of 11

so...
a couple mods
and we're up to 12.5

put the Wrangler SR/A's on..
got about a half-mile-per increase..

so for pure fuel economy, I SHOULD HAVE
gone back to the narrower tire 235/85R16

and to keep traction at a respectable level
I SHOULD HAVE gone back with the Silent Armor
(but they didn't have white letters!)

because
A. I tow a horse trailer, and need the stability towing
B. I live in a snowy winter climate, and need the traction
C. I'm not the only one that drives my truck (horse shows, etc), and I need to not worry about who has it, and where...

not that I'm advertising,
I just wanted to share my saga of the rubber...

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post #2 of 7 (permalink) Old 09-28-2008, 03:24 PM
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Re: Tires: My Story

I had read a few other reports of those Silent Armor tires cutting down on fuel mileage. How are they wearing?

Tom

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post #3 of 7 (permalink) Old 09-28-2008, 04:09 PM Thread Starter
blame the dog..
 
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Re: Tires: My Story

wore 'em right flat out..
55,000 miles.

any new tire will reduce your fuel economy due to increased rolling resistence due to tread flex..
plus, they're pretty aggressive..

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post #4 of 7 (permalink) Old 09-28-2008, 07:15 PM
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Re: Tires: My Story

I run those tires i havent noticed much drop in fuel mileage. I run 285/75/16. And i agree that the truck has never ridden better. They ride very quiet for an agressive tread tire.

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post #5 of 7 (permalink) Old 09-28-2008, 07:42 PM
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Re: Tires: My Story

I haven't noticed too much diffrence going from 235s to 265s I still get 14-16mpg depending how & where I'm driving it. Didn't really have the 235s on there for more then a few days before switching to the 265s but the last owner told me he got around 14mpg with it when it had 235s.
Next set of tires for the Superduty will be 265s. I agree with you Dickmon they just handle better on the road.


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post #6 of 7 (permalink) Old 09-29-2008, 04:26 PM
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Re: Tires: My Story

I ran the Dunlop Rovers years ago, got 20k miles out of them. Went back to the place I got them from and complained, best they could do is sell me the same tire for 50% off. Fine, whatever, got 20k miles out of those. I'll never get Dunlop again...

I've put BFG's on 4 trucks and get great longevity of them. I'm sold on paying for good tires.
Oh, and I can't comment on mpg, so sorry if I threw your thread off...
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post #7 of 7 (permalink) Old 10-01-2008, 12:16 AM
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Re: Tires: My Story

The same story gets told amongst hypermilers. They lust for MPG uber alles. They seek out low rolling resistance (LRR) tires, but sometimes get the bejeebers scared out of them because LRR also means low traction. They live with it because they drive so slow they can retain control even with slippery tires.

The only tires in a size we can use are Michelin Rib tires and Goodrich Long Trails. At least those are the only ones I have any data on. I have the feeling that the OEM Firebombs are LRR tires. A general characteristic of LRR tires is that they tend to be quiet. Noise requires energy and guess where that energy comes from. The Firebombs are quiet. They are also tolerant of 100 psi inflation.

If you can only go with one set of tires get the ones with good traction. Tires are a minor player in seeking MPG and avoiding medical bills and bodywork will offset a lot of fuel.

JLDickmon lives in the Snow Belt. It would seem to me it would behoove him to have a set of specialist snow tires for winter operations. Snow and ice place very different demands than what dry or rain-slick roads (and high MPG) demand. When I lived in WV and CO, I had a set of winter tires (BFG Mud-Terrains which were excellent snow tires but were treacherous on wet roads) and summer tires.

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