Method 316's, Firestone X/T Tires - Maintaining Stock Performance #'s!

ambosway said:

Upgraded my XLT LR with Method 316's - 18" +18mm - and Firestone XT 275/70R18 AT load E tires.

I did a lot of research to try to match the rotating mass of the OEM wheels/tires and landed within two pounds. I'm a first time Firestone customer but really happy with the tires. They have great road manners, quiet on the highway, and look awesome on the truck IMO. The XT's seem to have good traction (pun) among commercial/fleet super duty customers with reports of strong distance and highway performance. Tires have more road noise around town but it's not bad at all and I'm used to my previous F150's with cat back setups... kind of like a little more feedback. In general, the stiffer tires feel more planted and track better on the highway. Definitely recommend.

I stuck with 33's as they're big enough for my needs and thought the look of 34's would be lost on the truck without a level, not to mention rub issues. I was planning on a level but think that's scrapped with the performance numbers I maintained, would rather have the road trip range for frequent work trips. Excited to get the truck on some two tracks for deer season.

Commute is 20 miles round trip and relatively urban driving. Averaged 3.2 M/KWH before setup and 3.1 in the past two days. Negligible at best. Did a highway drive today 150 miles at 70 mph and averaged 2.1 M/KWH. On the return trip I was towing my boat and averaged 1.5 M/KWH. Both highway numbers are dead on stock setup - thrilled with the results. Only hiccup was 'fast' charger on the way home pinning at 99 KWH.

Setup against stock:

Stock weight, 78#:

New setup, 80#:

Poke is just the sidewall bulge, which is the look I like and what I wanted:

Side view:

Charging session with the boat and a wider view pic of the truck:

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WildBlue said:

Curious: with the stiff sidewall of the E rated tires, did you notice much of a ride harshness increase? Granted, you went from 20" wheels to 18" wheels, so that probably softened the ride as well.

I ask because I just bought a set of 18" F150 wheels that I was going to get some tires for and have been struggling with selecting the right tire. I was trying to avoid E-rated tires because they are heavier, less efficient (more rolling resistance) and have a stiff ride, or at least I assumed anyway.

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ambosway said:

When I first put the tires on I did... but then did a quick pressure check and realize why they felt that way... shipped them with full air! I've since dropped them to 55 PSI and they ride great. Like I said in the post, seem to track better on the highway.

If you want 33's in the 18 you're looking at a E tire. If you want to bump down into 32 territory there are plenty of 116T/C/D options.

I would encourage you to look at total rotational mass - tires + wheels - and go from there. Michelin's AT is another option I looked at but liked the Firestone tread better.

Hope this helps.

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WildBlue said:

Thanks for the response. I was actually looking at going with 265/70/18s, which have plenty of SL/XL rated options. They are 32.6" diameter instead of the factory 32" diameter for the 18" wheels; the 20" wheels are 33" diameter, so I would be taking a slight hit on overall diameter, but would add almost 1" on extra sidewall.

I am basically down to 4 choices in 265/70/18:
Michelin Defender LTX2 (all season choice)
Firestone Destination AT2
Nokian Outpost nAT
Continental TerrainContact AT

I'd really like to try the Nokian Outpost nATs out, but they are on backorder in this size for a little while.

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ambosway said:

Upgraded my XLT LR with Method 316's - 18" +18mm - and Firestone XT 275/70R18 AT load E tires.

I did a lot of research to try to match the rotating mass of the OEM wheels/tires and landed within two pounds. I'm a first time Firestone customer but really happy with the tires. They have great road manners, quiet on the highway, and look awesome on the truck IMO. The XT's seem to have good traction (pun) among commercial/fleet super duty customers with reports of strong distance and highway performance. Tires have more road noise around town but it's not bad at all and I'm used to my previous F150's with cat back setups... kind of like a little more feedback. In general, the stiffer tires feel more planted and track better on the highway. Definitely recommend.

I stuck with 33's as they're big enough for my needs and thought the look of 34's would be lost on the truck without a level, not to mention rub issues. I was planning on a level but think that's scrapped with the performance numbers I maintained, would rather have the road trip range for frequent work trips. Excited to get the truck on some two tracks for deer season.

Commute is 20 miles round trip and relatively urban driving. Averaged 3.2 M/KWH before setup and 3.1 in the past two days. Negligible at best. Did a highway drive today 150 miles at 70 mph and averaged 2.1 M/KWH. On the return trip I was towing my boat and averaged 1.5 M/KWH. Both highway numbers are dead on stock setup - thrilled with the results. Only hiccup was 'fast' charger on the way home pinning at 99 KWH.

Setup against stock:

Stock weight, 78#:

New setup, 80#:

Poke is just the sidewall bulge, which is the look I like and what I wanted:

Side view:

Charging session with the boat and a wider view pic of the truck:

Click to expand...

ambosway said:

Upgraded my XLT LR with Method 316's - 18" +18mm - and Firestone XT 275/70R18 AT load E tires.

Click to expand...

MJDore said:

Curious where you sourced these from? I seem to only find ones with raised white lettering and never in the wheel/tire combo you have here. Just curious if you don't mind sharing. THANKS

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GingerBear85 said:

When dropping down to 18” rims did you have any issues with the wheel speed sensors? I asked about putting 18” rims on my 2023 Lariat at Price Ford in Simi Valley and they told if I did it would cause problems. I can’t stand the 20” rims and want more sidewall to air down when off road, the General Grabbers that came with the truck are going to be ready for replacement by 40k and have been utterly depressing when not on pavement. That combo @ambosway looks great on the truck, hope to fix mine up similarly!

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