Tire weight vs tire size?
12-12-2018, 03:02 PM
#11
That's a good suggestion, I'll keep that in mind. I reckon if I actually run the Fortitude HTs until the bottom of the sipes (not full-depth), I can probably afford to swap the wheels and tires at the same time. The AR931 looks good but is obscure and no one has detailed specs on the weight and whatnot.
I think the stock 275/65R18s are about 39lb, so the Ridge Grapplers are quite a bit heavier. Speaking of which, I emailed Cooper about the weight of 285/70R17 X/T4s and the official spec is 45lb, which is not bad. Good to have some official data.
I think the stock 275/65R18s are about 39lb, so the Ridge Grapplers are quite a bit heavier. Speaking of which, I emailed Cooper about the weight of 285/70R17 X/T4s and the official spec is 45lb, which is not bad. Good to have some official data.
The following users liked this post:
nubbins_ (12-18-2018)
12-14-2018, 10:45 AM
#12
Senior Member
I know what you're thinking - "why the fuss? Aren't the two inexorably associated for aggressive tires like the KO2?" But what about tires that aren't quite as extraneously bulky? Stock tires for lower trims especially are GY Fortitude HTs. P265/70R17 usually weighs around 38 lb for this tire.
Now, 285/70R17 (~32.8") looks really attractive to me, not for the sake of gaining ground clearance, but to better fill what I think are hideously "empty" wheel wells on the F150. I don't wheel hard, so P-rated is just fine. Some AT capability is important, but all-weather performance is of more value to me; thus, my first choices would be along the lines of Cooper X/T4 and Yoko G015, both available in 285/70 (Cooper's official website doesn't show it, but they do exist). The lesser weight is also more attractive to me. The Falken Wildpeak AT3Ws have been good to me so far, but I haven't had any chance to test their mettle in serious winter conditions, and they are heavy.
285/70R17 for the P-rated X/T4 and G015 weigh roughly 43-44 lb
265/70R17 for the P-rated Wildpeak weighs roughly 45 lb
265/70R17 for the E-rated Wildpeak weighs roughly 52 lb
Now, casting aside durability concerns, how differently would a 5.0 3.73 truck handle these tires? Aside from the speedometer that can be fixed via Forscan or Hypertech programmer, which is more difficult to turn for the powertrain (and therefore a difference more noticeable in driving), the lighter & larger tires, or the smaller but heavier tires?
Now, 285/70R17 (~32.8") looks really attractive to me, not for the sake of gaining ground clearance, but to better fill what I think are hideously "empty" wheel wells on the F150. I don't wheel hard, so P-rated is just fine. Some AT capability is important, but all-weather performance is of more value to me; thus, my first choices would be along the lines of Cooper X/T4 and Yoko G015, both available in 285/70 (Cooper's official website doesn't show it, but they do exist). The lesser weight is also more attractive to me. The Falken Wildpeak AT3Ws have been good to me so far, but I haven't had any chance to test their mettle in serious winter conditions, and they are heavy.
285/70R17 for the P-rated X/T4 and G015 weigh roughly 43-44 lb
265/70R17 for the P-rated Wildpeak weighs roughly 45 lb
265/70R17 for the E-rated Wildpeak weighs roughly 52 lb
Now, casting aside durability concerns, how differently would a 5.0 3.73 truck handle these tires? Aside from the speedometer that can be fixed via Forscan or Hypertech programmer, which is more difficult to turn for the powertrain (and therefore a difference more noticeable in driving), the lighter & larger tires, or the smaller but heavier tires?
Stock 2017 F150 XL -Michelin LTX M/S 245-70-17, 42 pounds each according to Tire Rack info,
With Icon Stage 1 set to about 1/3/4 inch lift front, XD 8-17, 0mm offset wheels, Nitto Terra Grappler G2's (115T), 265-70-17, 40.19 pounds Nitto spec
Did not weigh the stock vs XD wheels but did carry and heft each, both felt the same weight (closest guess).
Corrected speedometer, only after upgrade via FORScan (actual speed was 1.5-2.5 MPH fast, now 1/2 MPH slow). Zero noticed or recorded MPG change, much better traction control and stability wet and dry. Actual traction is a little better dry, noticeably better wet, better in snow (3 events so far, deepest 7 inches).
My "cup of tea" for what I want out of the truck. I went with lighter weight specifically to avoid added rolling inertia and it's effects, as it's use is lightly loaded highway and gravel trail use. Currently inflated to 33 pounds (cold morning temps 20's), to 37 (after an hour on road). Definitely improved the responsiveness, handling, added some traction, the Michelin's felt wiggly broken loose, G2's feel more controllable and straight line stable. Rides as well and as quiet as prior, just a quick acceleration, better braking. Alignment check after was within stock specs. Only needed to lower the headlights a bit to be happy on the road! KM
Last edited by 2017bluetruck; 12-14-2018 at 11:05 AM.
The following users liked this post:
nubbins_ (12-18-2018)
12-18-2018, 02:24 PM
#13
Senior Member
Thread Starter
Not a direct answer but may help a bit.
Stock 2017 F150 XL -Michelin LTX M/S 245-70-17, 42 pounds each according to Tire Rack info,
With Icon Stage 1 set to about 1/3/4 inch lift front, XD 8-17, 0mm offset wheels, Nitto Terra Grappler G2's (115T), 265-70-17, 40.19 pounds Nitto spec
Did not weigh the stock vs XD wheels but did carry and heft each, both felt the same weight (closest guess).
Corrected speedometer, only after upgrade via FORScan (actual speed was 1.5-2.5 MPH fast, now 1/2 MPH slow). Zero noticed or recorded MPG change, much better traction control and stability wet and dry. Actual traction is a little better dry, noticeably better wet, better in snow (3 events so far, deepest 7 inches).
My "cup of tea" for what I want out of the truck. I went with lighter weight specifically to avoid added rolling inertia and it's effects, as it's use is lightly loaded highway and gravel trail use. Currently inflated to 33 pounds (cold morning temps 20's), to 37 (after an hour on road). Definitely improved the responsiveness, handling, added some traction, the Michelin's felt wiggly broken loose, G2's feel more controllable and straight line stable. Rides as well and as quiet as prior, just a quick acceleration, better braking. Alignment check after was within stock specs. Only needed to lower the headlights a bit to be happy on the road! KM
Stock 2017 F150 XL -Michelin LTX M/S 245-70-17, 42 pounds each according to Tire Rack info,
With Icon Stage 1 set to about 1/3/4 inch lift front, XD 8-17, 0mm offset wheels, Nitto Terra Grappler G2's (115T), 265-70-17, 40.19 pounds Nitto spec
Did not weigh the stock vs XD wheels but did carry and heft each, both felt the same weight (closest guess).
Corrected speedometer, only after upgrade via FORScan (actual speed was 1.5-2.5 MPH fast, now 1/2 MPH slow). Zero noticed or recorded MPG change, much better traction control and stability wet and dry. Actual traction is a little better dry, noticeably better wet, better in snow (3 events so far, deepest 7 inches).
My "cup of tea" for what I want out of the truck. I went with lighter weight specifically to avoid added rolling inertia and it's effects, as it's use is lightly loaded highway and gravel trail use. Currently inflated to 33 pounds (cold morning temps 20's), to 37 (after an hour on road). Definitely improved the responsiveness, handling, added some traction, the Michelin's felt wiggly broken loose, G2's feel more controllable and straight line stable. Rides as well and as quiet as prior, just a quick acceleration, better braking. Alignment check after was within stock specs. Only needed to lower the headlights a bit to be happy on the road! KM