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Old 02-13-2016, 02:25 PM   #1
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Shopping for TV Tires (Ram 1500 EcoD)...Your thoughts

I love my new Ram EcoDiesel. HATE the tires. They are great for fuel economy, but that is about it.

Here are some facts.
Stock 20" 275/60R20 33.0" tires (2340lb @90% load capacity)
Stock 17" 265/70R17 31.7" tires
My Gearing 3.55:1
Towing - Roo 183
Haven't weighed yet, so don't ask. Was 100 pounds over on my Jeep when towing.

Talking to a few people who tow a lot on the EcoDiesel forum, I thought about going to 275/55R20 tires. They are a stock size for Ford and GM (so I am told). There are a great number of tires available in this size, But, very limited in LT sizes, just like my stock size, but lots of XL size. Also, some people on the forum actually went down to 17" from 20" size. So that got me thinking.

I started looking at 18" wheels. 275/65R18 tires are 32.1". Sized between the 2 stock tires, so I can get my speedometer adjusted close (I have the Edge CTS2 that can do that). Also, There is about a 50/50 mix of P rated and LT rated tires in this category, including many who make BOTH versions the same tire (Cooper Discoverer AT3 actually makes a P, LR-C, LR-E)

So, for towing my Roo, I am thinking of getting Hankook Dynapro ATm in P275/65R18 (2340 lb @90%). I currently am running them on my Jeep, and they have been great to me. Very confident in the snow with the Mountain/SnowFlake symbol. Going this size, I can at a future time, switch to the same size LT tire, if I decide that I need a stiffer tire.

The reasoning for going with a P rated at this time is so that I don't take a huge hit in Fuel Mileage. Current tire/rim setup is approx 72-75 pounds. The 18" setup, according to Tirerack, will be about 68 pounds. If going to an LT tire, it would be about 84 pounds.

Now, onto my spare. Here is the good part. I can ditch the current 235/85R17 32.4" temporary use spare and install a LT275/70R17 which is 32.2 inches (2nd choice is a P255/75R17 32.1" tire).

Just asking, anything flawed with my approach??
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Old 02-13-2016, 02:31 PM   #2
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So what is so bad about the tires you have now? Later RJD
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Old 02-13-2016, 03:20 PM   #3
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Originally Posted by aceinspp View Post
So what is so bad about the tires you have now? Later RJD
White knuckles in the snow.
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Old 02-13-2016, 04:12 PM   #4
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If you have the goodyears. I agree they are terrible in the snow and even on wet roads. I am looking for new tires on my 2013. I think I will stay with the 20's.
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Old 02-13-2016, 06:18 PM   #5
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Originally Posted by Happy Vibe View Post
If you have the goodyears. I agree they are terrible in the snow and even on wet roads. I am looking for new tires on my 2013. I think I will stay with the 20's.
If you are needing a bit more RPM and torque, consider 55s and have your dealer recalibrate your speedo. They may have to calibrate it for the 17s, but it will be so close. 75 on the speedo will be 76.

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Old 02-13-2016, 06:56 PM   #6
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Well I would say if the part of the country you live in then you would look for some type of all season tire. BTW are you towing in the winter? If not then why bother. Not like years ago when you bought snow tires. Later RJD
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Old 02-13-2016, 07:06 PM   #7
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Originally Posted by aceinspp View Post
Well I would say if the part of the country you live in then you would look for some type of all season tire. BTW are you towing in the winter? If not then why bother. Not like years ago when you bought snow tires. Later RJD
I am trying not to get a dedicated snow tire. That is why I like the Hankook Dynapro ATm. I have the Hankooks on my Jeep, and they perform real well in all weather.
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Old 02-13-2016, 07:16 PM   #8
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Quote:
Originally Posted by ChooChooMan74 View Post
Just asking, anything flawed with my approach??
Yep. You're towing. Save the money and just put LT tires on it from the start. 40 lbs total isn't going to change much mileage wise. Going to a more aggressive tread pattern likely could however.
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Old 02-13-2016, 07:19 PM   #9
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Originally Posted by ChooChooMan74 View Post
I am trying not to get a dedicated snow tire. That is why I like the Hankook Dynapro ATm. I have the Hankooks on my Jeep, and they perform real well in all weather.
Maybe stick to the rails during winter Later RJD
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Old 02-13-2016, 07:45 PM   #10
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Quote:
Originally Posted by ferguson65 View Post
Yep. You're towing. Save the money and just put LT tires on it from the start. 40 lbs total isn't going to change much mileage wise. Going to a more aggressive tread pattern likely could however.
Good point. Just weighing getting dedicated snow for winter with something like Michelin LTX for summer vs one tire for year round use.
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Maybe stick to the rails during winter Later RJD
Lol. That's the issue. I gotta be able to get to the train in the snow!

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