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Great contribution, thanks! I was always a BFG All Terrain KO guy before my 2011 LR 4 surprised me with a 19 inch wheel. I adapted and found relative happiness with the Cooper Zeons. I had some issues w/leaky air pressure from road hazards I seemed to attract for a couple of years. Once everyone was properly plugged, they did very well. I now have a 2015 Range Rover with 20" wheels and am struggling to find an all terrain tire. Mine now has 255/55/20 street tires. I am considering going to a 265/60/20, as there are several options in that size. There are no options in 255/55/20. Has anyone tried an all terrain tire in 265/60/20 on a RR? I understand it will be about 1.5 inches taller in diameter and about .5 inch wider. My guess is they will fit nicely, and hopefully not rub, but I would love some confirmation. Also, about everything in that size is an LT tire which is certain to run rougher. If anyone has tried a 265/60/20 on a 2015 body style RR, I would love to hear from you. Thanks!!
 

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Bumping a very old thread since it's relevant.

Just swapped out my 275/55R20 BFG KO2 in E rating for Cooper Discoverer AT3 4S in XL rating. I haven't been off-roading nearly as much and wanted a lighter tire for better on-road manners (acceleration, braking, fuel economy) and the AT3 4S get great reviews and are great on snow/slush/ice from what I've read. They're a full 10lb lighter per tire and it was instantly noticeable.

I've only driven about 5 miles on them so far and the ride is like a pillow top mattress compared to the KO2s. Will update with a longer term review after I've put at least a thousand miles on them. Will be going on a road-trip + doing some light off-roading in the mountains in the next couple of weeks.
 

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~100 mile driving impression on the AT3 4S: the reduction in tire weight is very noticeable. Car accelerates a bit faster and stops a bit faster. Fuel economy has noticeably improved, but I won't know how much until I get a couple full tanks worth of data.

The KO2s had a much stiffer sidewall compared to the AT3 4S, so the AT3s feel squishier now when taking turns which is an unfortunate side effect.
 

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~100 mile driving impression on the AT3 4S: the reduction in tire weight is very noticeable. Car accelerates a bit faster and stops a bit faster. Fuel economy has noticeably improved, but I won't know how much until I get a couple full tanks worth of data.

The KO2s had a much stiffer sidewall compared to the AT3 4S, so the AT3s feel squishier now when taking turns which is an unfortunate side effect.
What tire size did you go with?
 

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an
I did a bunch of homework on what's available for the 20 inch wheel in an All-Terrain tire and size wise it really comes down to a 275/55/20 if you are looking for an A/T that has the parameters I was looking for.

The owners of a LR dealership local to me put the 285/50/20's on their full size Range Rover but can't lower it without rubbing (wheel wells are same size as RRS). The 285's are the same circumference as the stock tire, but they're considerably wider. The width is apparently the problem.

I have read of other people going with the 285, but I was advised against it by several tire dealers who know the '14 RRS. Caveat Emptor...

The 275's are a little wider than stock, but just about an inch taller. Plenty of calculators on the webs if you want to see how they all size up. Bottom line: perfect fit. Fill the wheel well nicely, stay inside the body panels and no rub anywhere under any condition.

One note, the computer is adjusting to the tire size for mileage calcs et al, but the speedo is no doubt off a bit. I spoke with my dealer who said it cant be adjusted, but I also spoke with an independent who said "no problem." In any event, heard from guys that say they didn't even bother loading the new tire size. I'm going to GPS it and see how far off I am.

Ok, so which tire? I focused on a "true" all terrain tire that was as mild as possible in tread design, sacrificed as little as possible in on-road performance, and was as quiet as an A/T can be. I looked at everything.

I ended up with the Discount Tire aka Americas Tire Co. proprietary version of the Cooper Discover AT3. Based on hours of research, the AT3 is the best of the bunch. Of course everyone has their favorite, but the positive comments from reviewers and the boards were overwhelmingly positive over any other tire.

I chose the Discount Tire version called the ATP. You can only buy this version from them. The tire is identical to the AT3 except that it has its own distinctive tread pattern. The tread is similar to the Cooper LTZ, which appears to be popular with a lot of the Land Rover LR series guys. But, per Cooper, the AT3/ATP are the most advanced A/T tire they make now.

I spoke with Cooper Tires Corporation directly about the two versions and was told that the ATP runs a little quieter than the AT3. Other than that, no difference. From a looks perspective the ATP is a clear winner over the AT3 IMHO. Either way, both great tires.

Best part is that the 275/55/20 can be dropped at your door for about $150.00 per tire after rebates. Or, you can go to your local tire store and pay a little bit more. Either way, they are a lot of tire for the money. Consumer reports rates them over everything, for whatever that's worth.

I've put about 300 miles on the tires. They lose to the stock Michelin Latitudes at the limit which is to be expected and turn in isn't quite as sharp. I can feel that it's a stiffer tire and maybe a little heavier. All that being said the handling dynamics really haven't changed . Ride is very smooth and quiet. I don't miss the latitude Sports at all.

I was told to run the fronts at 30lbs and the rears at 40lbs. However, based on load limits between the AT3 and the Latitude you could lower the AT3 down to 26lbs and it still rated for more weight than the Michelin. No reason to run that low, though.

The tires really transform the look of this truck IMO. It looks like an SUV that means business. Frankly, LR should offer an A/T as an option.

I also had the tire dealer drop one of the new mounted tires into the spare tire carrier and it fits perfectly. Lid is flat.

I cant believe LR puts a frigging "spare" in any of their RRS's. Its a ****ty skinny tire on a steel wheel. They pack the compartment with Styrofoam so they can load a full sized tire in there if they want to. What a joke.

I'll load some pics shortly but they aren't very good.

in the meantime - http://www.discounttiredirect.com/direct/findTireDetail.do?ra=filterTireProducts.do&fl=&pc=15946&counter=0&ar=55&rd=20&cs=275
any pictures? I want to do the same with my 14 RRS SCV8 dynaminc
 

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Bumping a very old thread since it's relevant.

Just swapped out my 275/55R20 BFG KO2 in E rating for Cooper Discoverer AT3 4S in XL rating. I haven't been off-roading nearly as much and wanted a lighter tire for better on-road manners (acceleration, braking, fuel economy) and the AT3 4S get great reviews and are great on snow/slush/ice from what I've read. They're a full 10lb lighter per tire and it was instantly noticeable.

I've only driven about 5 miles on them so far and the ride is like a pillow top mattress compared to the KO2s. Will update with a longer term review after I've put at least a thousand miles on them. Will be going on a road-trip + doing some light off-roading in the mountains in the next couple of weeks.
I am debating where switch from Michelene 275/40R20 to 275/55/R20 -- am I screwing myself up?
I like the the fact that it's bit higher, the look is good, but my concerns are much more noise, high way ride quality decrease...steering response decrease, bad snow performance..
What can you tell from your experience with KO2? Thanks!!
 

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I am debating where switch from Michelene 275/40R20 to 275/55/R20 -- am I screwing myself up?
I like the the fact that it's bit higher, the look is good, but my concerns are much more noise, high way ride quality decrease...steering response decrease, bad snow performance..
What can you tell from your experience with KO2? Thanks!!
If you're worried about those things don't go with the KO2s--I'd recommend going with the Cooper AT3 4S instead.
 
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