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Discussion Starter #1
I will soon be installing my leveling kit and want to upgrade my tires. I'm still undecided on going to255/60R18 or 265/60R18. I know a lot of members are going the 265 route but I am worried of changing the dynamics a little too much and running into problems down the road. As far as 255/60R18 tires go, we don't have much choice. There's really only the two following options:

Hankook Dynapro AT-M
General Grabber AT2

I know a member here has the Dynapro but I have not seen anyone go for the Grabber. What are your thoughts between both tires, and also thoughts on going to 265?
 

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I'm running Dynapro AT-Ms on my Ranger and really like them, but they are LT-rated, 10-ply and heavy -- great for offroad but not great for mpgs. The 255/60R18 Dynapro AT-Ms shown on Tire Rack are P-series (not LT) and weigh just 5 lbs more than the RL's stock Firestones. Tire Rack says to check the specs for AT-M sizes that don't get the deep snow rating, but I couldn't find that info for the P255/60R18s.
 

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Changing Dynamics? Jesus, I have 33 inch tall tires on my Samurai and it has functioned for years.

I have 35s on my F350 and it's never crashed into a bus full of nuns.
 

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Changing Dynamics? Jesus, I have 33 inch tall tires on my Samurai and it has functioned for years.

I have 35s on my F350 and it's never crashed into a bus full of nuns.
I think Mr. Black is trying to say you'll be fine going with the 265 width. Not only do you get a little bit bigger footprint, your choices expand to just about every brand out there. I have 265's and there is absolutely no rubbing (I did go with aftermarket rims with 40mm offset).
 

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Aside from the lack of much choice at 255, I think it's too small a change. You're raising the truck 1.5" to fit a tire that is only 0.2" taller (0.4" in diameter). If you're going to spend the money to do the leveling kit, it only makes sense to go to 265/60-18. At least, that's how I'm rationalizing my way into a set of 265s!
 

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Discussion Starter #6 (Edited)
What I meant by changing the dynamics of the vehicle was that there are so many computers and electronics associated with our AWD units that changing too many things might start affecting things in the long run. Changing tire size on older vehicles isn't really going to affect anything since everything is strictly mechanical other than having to change components to handle some of the really large tires. I was more worried about the complexity of our systems.
 

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What I meant by changing the dynamics of the vehicle was that there are so many computers and electronics associated with our AWD units that changing too many things might start affecting things in the long run. Changing tire size on older vehicles isn't really going to affect anything since everything is strictly mechanical other than having to change components to handle some of the really large tires. I was more worried about the complexity of our systems.
As long as all the tires are the same size, it's not going to bother anything. The speedo will be off a little bit, but that's about it.
 

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I had 255/60/R18 Nitto Grapplers put on my G2.
I haven't decided yet to do the Truxx leveling bit.
When they put these on, the kid had me turn the steering wheel and he looked at it.
He didn't think there was much clearance but I told him many people were going with 265s.
 

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I tried Cooper 265/60/18 Discoverer ATPs with a Truxx leveling kit and I was getting a rub at full turn. Replacing with Hankook 255/60/18 Dynapro's
 

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^^^Great pic. Now I'm imagining that wheel well raised by 1.5" and I can't really see how that's gonna help much with clearance. Honda used the Pilot's tight wells for less drag and never intended the RL to run on larger tires, which for some of us is a shame. In my neck of the woods, that gap would quickly fill with frozen slush and even snow cables won't fit.
 

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I'm now leaning towards 255-60r18 tires. There are not many options, but here are the things I like about the idea:

- Half an inch taller gives more rubber for a softer ride over potholes, gives a small bump in ground clearance, and should look slightly bigger in the wheel well. But it hardly changes the speedometer and odometer at all (Speedometer will show 60mph when you are going 60.8mph).

- Half an inch wider should again look a bit more formidable but should be slightly better on MPG and eliminates the chance of rubbing that 265s give. I know most people on here don't care if their tires rub now and then, but I'd prefer that they do not. Just a personal preference.

- With only a half-inch difference in height, I'm not concerned about using the donut with 255-60s. But I would not use the spare donut with a tire a full inch taller like the 265s. That just seems like too much of a change to stick with that little donut they offer, so I'd feel the need to find a taller donut.

So now, I just need all the tire companies to make some damn 255-60r18 tires. It's hard to believe that there is hardly any sizing options between 245-60r18 and 265-60r18. That is a really significant jump.
 

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I had 255/60/R18 Nitto Grapplers put on my G2.
I haven't decided yet to do the Truxx leveling bit.
When they put these on, the kid had me turn the steering wheel and he looked at it.
He didn't think there was much clearance but I told him many people were going with 265s.
Do you have a picture of your truck with these tires?
 

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Anybody here ever run Pirelli Scorpion ATR tires? They come in 255-60-18 and are a really nice looking tire. They are a highway friendly AT tire.

They came stock on F-150s for a while and received mixed reviews. But people who purchase them to put on other vehicles seem to really like them.
 

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I had the Pirelli Scorpions 255/60/18's on my 2010 VW Touareg TDI. The were great for the first 20k miles, then became noisy as h$ll after that. Even with rotations every 5k. Bummer as they look great and rode great.
 

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I'm having the same dilemma, but will most likely go with the Dynapros in 255/60/R18. Not sure where you are located, but based on the info on Tire Rack the Dynapros are rated for severe snow service and the Grabbers are not. This is pretty important to me being in Alaska and planning to run one tire year round. As someone else mentioned the rub or near rub of 265's may be a problem with snow/slush/ice buildup that I don't want to deal with.
 

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Are the 255/60r18 Hankook Dynapros rated for severe snow? Does anybody who has them have an update on what they have been like to live with?
 

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Are the 255/60r18 Hankook Dynapros rated for severe snow? Does anybody who has them have an update on what they have been like to live with?
The tire rack rep I spoke with said none of the Hankook Dynapros carry the mountain snowflake symbol (severe snow rating), but he added that could just be because they didn't want to bother with the testing. In fact, the latest Consumer Reports rates the Dynapro AT-M as having as good or better snow traction and ice braking as all other AT truck tires they tested except a Nokian model. Based on 10 criteria, the Dynapros ranked 9th overall out of 17 AT tires tested and fell short of the top 6 tires that received "Recommended" ratings.

I can't help you with experience on the RL, but the Dynapro AT-Ms I've been running on my Ranger 4X4 for the last 3 winters have performed very well in deep snow and ice. But, as CR noted, the ride is stiff and they are not among the quieter AT tires available. Resistance to puncture on gravel roads has been excellent for me -- I drive some very rough roads and have yet to have a Dynapro go flat.

EDIT: After reading some of the customer reviews of the Dynapros on tirerack.com, I'm questioning what that rep told me about the severe snow rating. Some buyers commented that their Dynapros had the Mountain Snowflake symbol on the sidewall. Mine do not. Also, I should have mentioned that my Dynapros are LT-rated 10-ply, which accounts for their stiffer ride on my compact Ranger. They do soften up a bit if I air them down to 45 psi or lower. I see that P255/60R18s have a lower load rating and would probably ride nicer than my LTs.
 

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The tire rack rep I spoke with said none of the Hankook Dynapros carry the mountain snowflake symbol (severe snow rating), but he added that could just be because they didn't want to bother with the testing. In fact, the latest Consumer Reports rates the Dynapro AT-M as having as good or better snow traction and ice braking as all other AT truck tires they tested except a Nokian model. Based on 10 criteria, the Dynapros ranked 9th overall out of 17 AT tires tested and fell short of the top 6 tires that received "Recommended" ratings.

I can't help you with experience on the RL, but the Dynapro AT-Ms I've been running on my Ranger 4X4 for the last 3 winters have performed very well in deep snow and ice. But, as CR noted, the ride is stiff and they are not among the quieter AT tires available. Resistance to puncture on gravel roads has been excellent for me -- I drive some very rough roads and have yet to have a Dynapro go flat.

EDIT: After reading some of the customer reviews of the Dynapros on tirerack.com, I'm questioning what that rep told me about the severe snow rating. Some buyers commented that their Dynapros had the Mountain Snowflake symbol on the sidewall. Mine do not. Also, I should have mentioned that my Dynapros are LT-rated 10-ply, which accounts for their stiffer ride on my compact Ranger. They do soften up a bit if I air them down to 45 psi or lower. I see that P255/60R18s have a lower load rating and would probably ride nicer than my LTs.

The Pirelli Scorpion ATR are XL rated and have the higher load rating, but people say they ride smooth and are very quiet. The Hankooks are not, and have a lower load rating, but some people still say they are a bit on the noisy and stiff side.

I think a lot of the ride characteristics must have to do with the design, not just the specs. I'm really surprised so many people with with the Dynapros already and we still haven't seen a single owner with the Scorpion ATRs.

I came across an article where they took the Pilot off road and put the 255 ATRs on it ahead of time. This is it:

Honda Tough: Taking the Pilot to the Air
 
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