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It's about time for new tires for my 2017 Pro4x 5.0 and I'm looking at the BF Goodrich KO2's in stock size (275 65 18). I have the original OEM tires right now. Has anybody installed BFG's and seen a drop in their MPG? I'm not off road much, but is nice to have better traction when needed and I like they way they look. Just wondering if I should be prepared for a drop in mpg? I had the KO2's before on my land cruiser and loved them.
 

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It's about time for new tires for my 2017 Pro4x 5.0 and I'm looking at the BF Goodrich KO2's in stock size (275 65 18). I have the original OEM tires right now. Has anybody installed BFG's and seen a drop in their MPG? I'm not off road much, but is nice to have better traction when needed and I like they way they look. Just wondering if I should be prepared for a drop in mpg? I had the KO2's before on my land cruiser and loved them.
I’m putting them on my gasser 5.6. They are great tires. Had them on my 2004 5.9 Cummins for years and saw no drop in mileage. I’m sure my gasser will see a drop, but you probably won’t see much drop on a 5.0 diesel.
 

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If its the same size tire and close to the same weight, its unlikely to see much mpg difference on the tire when putting on a diesel. If they are close to same size, then the only difference is rolling resistance. With it being an AT, I wouldn't expect much if any drop.
 

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IMO the BFGs are too soft for the weight of these trucks. Premature wear from the weight, heat and torque.

They are great tires, though.
 

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Discussion Starter · #6 ·
I had them on my land cruiser which was heavy (not diesel heavy) and got really good wear out of them work 5k rotations. I really liked them. Most of the E rated tires I've been looking at are all within 6 pounds of each other, but I didn't know if the rolling resistance would affect mpg. I didn't buy this truck to get good mpg, but I also don't want it to drop. Thanks for all the help guys!
 

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I don't think you will see much drop but if you drive on gravel they don't last. I had them on a f150 and drove them til the tread face was falling off and didn't even make it to 30,000 miles. Too soft for the rocks on the road. Good traction but they just didn't last.
 

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Have to deal with the same trade off as always, rubber with better grip tends to be softer and more pliable, and more aggressive tread patterns also provide better grip but flex more and are prone to increased shear and wear, and if they conform better to the road surface they also tend to flex more under heavy load (increases heat, wear, etc).

I don't like the stock tires, I don't think the last long enough for what they were supposed to be designed for and better options exist, but if you want a long mileage highway tire you'll probably have to give up some off road grip and compliance, and if you you want a tire that grips better in the soft stuff you'll likely be losing some mileage life.

Don't agonize too much over your choice, pick a tire you like from a reputable manufacturer and go, go, go.

Sent from my SM-N960U using Tapatalk
 

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2018 XD Platinum Reserve 5.6L gasser
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Loving my K02s. Surprisingly quiet. I did see a small drop in mpgs, but they are SO MUCH BETTER than the ridiculous oem General "grabbers"!!!!!!!
 

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I had KO 2’s for the first 44k on my truck. They rode good and were pretty quiet. Changed to the Ridge Grapplers and have about 1k on them. They may be quieter than the BFG’s. Can’t go wrong with either. I like the tread and sidewall of the Nittos better. I don’t think mileage (mpg) should be a concern with either.
 

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I had KO 2’s for the first 44k on my truck. They rode good and were pretty quiet. Changed to the Ridge Grapplers and have about 1k on them. They may be quieter than the BFG’s. Can’t go wrong with either. I like the tread and sidewall of the Nittos better. I don’t think mileage (mpg) should be a concern with either.
I'm with you on the ridge grapplers. They are by far my favorite tire I've had.
 

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It's about time for new tires for my 2017 Pro4x 5.0 and I'm looking at the BF Goodrich KO2's in stock size (275 65 18). I have the original OEM tires right now. Has anybody installed BFG's and seen a drop in their MPG? I'm not off road much, but is nice to have better traction when needed and I like they way they look. Just wondering if I should be prepared for a drop in mpg? I had the KO2's before on my land cruiser and loved them.
Buy them! Great tire! Same mileage and very quite on the road. I can’t praise these tires enough!
 

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I
It's about time for new tires for my 2017 Pro4x 5.0 and I'm looking at the BF Goodrich KO2's in stock size (275 65 18). I have the original OEM tires right now. Has anybody installed BFG's and seen a drop in their MPG? I'm not off road much, but is nice to have better traction when needed and I like they way they look. Just wondering if I should be prepared for a drop in mpg? I had the KO2's before on my land cruiser and loved them.
I have a fully stock 2016 Pro4x gasser. I put a set of KO2’s on about a 8 months ago and haven’t seen any drop in mpg. FYI I went with 275/70/R18. Not sure if that is actually taller than 275/65/R18.....mine fit great and no rubbing. I measured height when I got them and they were a proper 33”.

I bought mine at Costco when they were running a sale. Paid less than I would have at any other chain. Also, mine came with a 50k warranty. But I am required to have them rotated by Costco every 5k miles to keep the warranty. They give free rotations as part of purchase price.

They said the 50k warranty was a new thing on the KO2’s. I’m not clear if the warranty is thru Costco or BFG. But I’m happy about it either way. I’m also not sure if the rubber is different hardness from previous non warrantied KO2’s. This is the first set I’ve ever owned. They are great on road and pretty good off road. Not as good off road as the set of MT I had on the truck when I bought it used. But I wouldn’t expect them to be.
 

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Discussion Starter · #15 ·
I


I have a fully stock 2016 Pro4x gasser. I put a set of KO2’s on about a 8 months ago and haven’t seen any drop in mpg. FYI I went with 275/70/R18. Not sure if that is actually taller than 275/65/R18.....mine fit great and no rubbing. I measured height when I got them and they were a proper 33”.

I bought mine at Costco when they were running a sale. Paid less than I would have at any other chain. Also, mine came with a 50k warranty. But I am required to have them rotated by Costco every 5k miles to keep the warranty. They give free rotations as part of purchase price.

They said the 50k warranty was a new thing on the KO2’s. I’m not clear if the warranty is thru Costco or BFG. But I’m happy about it either way. I’m also not sure if the rubber is different hardness from previous non warrantied KO2’s. This is the first set I’ve ever owned. They are great on road and pretty good off road. Not as good off road as the set of MT I had on the truck when I bought it used. But I wouldn’t expect them to be.
Great info!
 

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It's about time for new tires for my 2017 Pro4x 5.0 and I'm looking at the BF Goodrich KO2's in stock size (275 65 18). I have the original OEM tires right now. Has anybody installed BFG's and seen a drop in their MPG? I'm not off road much, but is nice to have better traction when needed and I like they way they look. Just wondering if I should be prepared for a drop in mpg? I had the KO2's before on my land cruiser and loved them.
Hello Water Trey,

I'm a big fan of the KO2's. I have them on my truck and many of our work (F150) truck's fleet have the KO2's. These tires will cut your gas mileage by one 1 or 2 mpg. However, after 10k miles on the tires, the Truck's MPG seems to go back to near normal.

For those who have the XD 20 inch wheels, Id like to share my KO2 story. I put new KO2s on at NTB (National Tire and Battery) - franchise. Had vibrations and went back several times for re-balance. Eventually after replacing several out of round KO2s, the truck still vibrated around 45 mph and up. NTB said my rims were bent. They are the stock aluminum rims. I called BS on that. After fighting with them, I went to a local family owned tire business. They checked the KO2s out and checked my rims for me. My rims were fine, three of the KO2s were out of round. The family owned tire shop had a "road force" tire balancing. NTB did not have this type of tire balancing equipment. After a total of 10 tires (KO2's) were put on and off my truck, I gave up and went with Nittro AT. It was a big long fight with BFG and NBT (National Tire and Battery). I started fighting the 3rd week of Nov and didn't get my money back until February.

To summarize, I don't recommend anyone going with the 20inch BFG KO2s unless your are buying the tires from a trusted tire business. The franchise companies will not fight for you. BFG had a bad batch of 20 inch KO2s. I'm still a big fan of the KO2s. But I will never try out another set on my XD.
 

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Discussion Starter · #17 ·
Hello Water Trey,

I'm a big fan of the KO2's. I have them on my truck and many of our work (F150) truck's fleet have the KO2's. These tires will cut your gas mileage by one 1 or 2 mpg. However, after 10k miles on the tires, the Truck's MPG seems to go back to near normal.

For those who have the XD 20 inch wheels, Id like to share my KO2 story. I put new KO2s on at NTB (National Tire and Battery) - franchise. Had vibrations and went back several times for re-balance. Eventually after replacing several out of round KO2s, the truck still vibrated around 45 mph and up. NTB said my rims were bent. They are the stock aluminum rims. I called BS on that. After fighting with them, I went to a local family owned tire business. They checked the KO2s out and checked my rims for me. My rims were fine, three of the KO2s were out of round. The family owned tire shop had a "road force" tire balancing. NTB did not have this type of tire balancing equipment. After a total of 10 tires (KO2's) were put on and off my truck, I gave up and went with Nittro AT. It was a big long fight with BFG and NBT (National Tire and Battery). I started fighting the 3rd week of Nov and didn't get my money back until February.

To summarize, I don't recommend anyone going with the 20inch BFG KO2s unless your are buying the tires from a trusted tire business. The franchise companies will not fight for you. BFG had a bad batch of 20 inch KO2s. I'm still a big fan of the KO2s. But I will never try out another set on my XD.
Do you have gas or diesel Titan?
 

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I've had my BFG KO2s now for a few months on my PR XD 4x4 Cummins and I love them. They are super quiet, smooth and haven't noticed much if any mpg loss and they look great on the truck. I got mine at Costco when they had a sale of $70 off a set of four back in March or April this year. Anyways, don't sweat the small stuff. If you like them and I did get them.
 

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I've had my BFG KO2s now for a few months on my PR XD 4x4 Cummins and I love them. They are super quiet, smooth and haven't noticed much if any mpg loss and they look great on the truck. I got mine at Costco when they had a sale of $70 off a set of four back in March or April this year. Anyways, don't sweat the small stuff. If you like them and I did get them.
did you get the 50k warranty on yours? When I bought my KO2’s at Costco they had older sets without the warranty and newer sets with the warranty option. I went with the warranty set. They have been great on road but a little less grippy off-road than I was hoping for. I assume mine have a harder rubber but am too lazy to research that, lol. Just wondering if you know anything about it.
 
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