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Old 09-29-2011, 07:02 AM   #61
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Can i put 18 on a dodge? I'll check them out
yes you can as long as you get the right bolt pattern - 5 x 5.5 is what you need but like I said watch the backspace of the rim - the further you put the rim and tire out the reduction in turn radius you will have.
I am running 305-70-18 tires with Dick Cepek DC-1 rims but the back space is 4-1/2" and you dont want that.

you cant put 16" rims on your Dodge they will not fit over the brake caliper.
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Old 09-29-2011, 07:21 AM   #62
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I get a feeling most 1/2 ton truck are towing above their GWVR
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Old 09-29-2011, 08:08 AM   #63
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Originally Posted by sherdep View Post
yes you can as long as you get the right bolt pattern - 5 x 5.5 is what you need but like I said watch the backspace of the rim - the further you put the rim and tire out the reduction in turn radius you will have.
I am running 305-70-18 tires with Dick Cepek DC-1 rims but the back space is 4-1/2" and you dont want that.

you cant put 16" rims on your Dodge they will not fit over the brake caliper.
Why would you bother to go with aftermarket 18" rim???

Issues would be added cost for both tires and rims, getting the correct backspace in the aftermarket rim, correcting the speedometer error.

The best recommendation is to replace the factory 20's with factory 17" wheels...lots available used at half the price of new 18's. The dealership can correct the speedometer error as it would be an OEM option as long as the put on the OEM sized tires (265/70/17's).

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Old 09-29-2011, 05:30 PM   #64
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I get a feeling most 1/2 ton truck are towing above their GWVR
All I know is when I bought my truck they told me I could tow 9100 lbs. At that time we had a Mallard 29S which was a 29 foot trailer plus the hitch,no slide though,and it towed it fine.We then got our Salem 30Kqbss which is supposed to be 6700lbs dry but has a hitch weight of close to 1000lbs whitch at first was an issue but after playing with the hitch seems to be alright now.Power to tow was never a problem and the truck has a transmission,engine oil and coolant temp displays that never get much hotter towing than not towing,so if I am overloading the truck it is not showing it.I really wouldn't worry about numbers you have read,if your truck is towing to much it will usually let you know by something heating up more than it should.I will,however,soon be getting some new Michelins for it .
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Old 09-29-2011, 06:03 PM   #65
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All I know is when I bought my truck they told me I could tow 9100 lbs. At that time we had a Mallard 29S which was a 29 foot trailer plus the hitch,no slide though,and it towed it fine.We then got our Salem 30Kqbss which is supposed to be 6700lbs dry but has a hitch weight of close to 1000lbs whitch at first was an issue but after playing with the hitch seems to be alright now.

As I mentioned in a previous post, you run out of payload capacity before you run out of towing capacity...true for most 1/2 and 3/4 T trucks.

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Old 10-04-2011, 10:04 PM   #66
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Why would you bother to go with aftermarket 18" rim???

Issues would be added cost for both tires and rims, getting the correct backspace in the aftermarket rim, correcting the speedometer error.

The best recommendation is to replace the factory 20's with factory 17" wheels...lots available used at half the price of new 18's. The dealership can correct the speedometer error as it would be an OEM option as long as the put on the OEM sized tires (265/70/17's).

Dave
Dave,
I understand where you are coming from - am throwing other options out

the 17" rims are not as nice looking as the 20" rims

the other reasoning behind the 18" tires is less side wall and flex then a 17" tire and you can get a 33" tire in a load range E (same size tire as the Ford F-250's are using) which is the same height as the 20" tire and would not need a speedo recalibration - the only way for a speedo recalibration is with a Superchips - from what I remember the factory cannot recalibrate the 4th gen rams with the DRB (Last I remember but that could have changed).

I own a 3rd Gen Ram and have done both - dealer recalibrated the speedo and then had it put back and now I am using the Superchips to correct it.
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Old 10-04-2011, 10:26 PM   #67
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33" tire in a load range E (same size tire as the Ford F-250's are using) which is the same height as the 20" tire and would not need a speedo recalibration
The only 20" LT truck available when I was looking is 275/65/20 which is the optional OEM tire on the F250's. They're 34.1 inch diameter compared 33" for the 275/60/20 on the Rams. Bigger diameter, lower (numerical) axle ratio which I didn't want and the $400 per tire was tough to swallow. Going with the OEM sized 17" was the same as changing the axle ratio from 3.92 to 4.10's.

When towing, I found that the truck would stay in fifth gear more often yielding a slightly better mpg and was definitely better come hill climbing.

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Old 10-04-2011, 10:31 PM   #68
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I get a feeling most 1/2 ton truck are towing above their GWVR
I agree and i am one of those, but my truck has been towing fine with 8-10 mpg and pulls fine on the hills. Lots of stopping power with huge 4 wheel disk brakes.

I also think the same can be said for the 3/4 ton trucks and the 1 ton trucks too. These people with bigger trucks buy bigger campers. It's all relative.
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Old 10-04-2011, 10:49 PM   #69
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Originally Posted by Dave_Monica View Post
The only 20" LT truck available when I was looking is 275/65/20 which is the optional OEM tire on the F250's. They're 34.1 inch diameter compared 33" for the 275/60/20 on the Rams. Bigger diameter, lower (numerical) axle ratio which I didn't want and the $400 per tire was tough to swallow. Going with the OEM sized 17" was the same as changing the axle ratio from 3.92 to 4.10's.

When towing, I found that the truck would stay in fifth gear more often yielding a slightly better mpg and was definitely better come hill climbing.

Dave
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Why would you bother to go with aftermarket 18" rim???
Michelin LTX MS 2 are $275 a piece but after you add mounting and balancing - 4 tires will cost you around $1268 (priced them out when I was going to replace my present tires)

I was responding to your question about 18's not 20's -
275/70/18 (stock size tire on the F250's) - 33.2" - which will make the tire off by .5% since it is a tad bigger but not enough to make that much of a diffrence they would not need a recalibration on the speedo.

There are not many options for Load Range E tires in the 275/60/20 - Cooper Zeon's are an option but I hate cooper tires - which is my opinion.

My Truck came stock with 20"s so I know what you are talking about - I had to get aftermarket rims due to the Lift Kit I installed on my truck because the stock rims would not fit due to the back space of the stock rim caused the rim to hit the outer tie rod's.
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Old 10-04-2011, 10:57 PM   #70
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Cooper!!! Isn't that someone that hammerforms copper?

Dave
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