Choosing replacement tires
Thread Starter
Senior Member
Joined: Jul 2016
Posts: 585
Likes: 115
From: Central Minnesota
Choosing replacement tires
My 2010 Screw has 265/70R17 Wrangler AT/S. Specs for a similar replacement are:
Section Width:10.7
Overall Diameter:31.7
Tread Depth (32nds):13
RPM:660
Max Load (lbs.):2535 lbs @ 35 psi
I am comparing it to a 265/70R17 Wrangler Fortitude HT:
Section Width:10.71
Overall Diameter:31.65
Tread Depth (32nds):12
RPM:682
Max Load (lbs.):2679 lbs @ 51 psi
The high end weight of my TT is 5,500 lbs.
Does the Fortitude offer enough advantages with higher RPM and max load? Does the increased psi compromise specs on my door sticker? My price would be about $125 more per set that the Wrangler.
Section Width:10.7
Overall Diameter:31.7
Tread Depth (32nds):13
RPM:660
Max Load (lbs.):2535 lbs @ 35 psi
I am comparing it to a 265/70R17 Wrangler Fortitude HT:
Section Width:10.71
Overall Diameter:31.65
Tread Depth (32nds):12
RPM:682
Max Load (lbs.):2679 lbs @ 51 psi
The high end weight of my TT is 5,500 lbs.
Does the Fortitude offer enough advantages with higher RPM and max load? Does the increased psi compromise specs on my door sticker? My price would be about $125 more per set that the Wrangler.
Last edited by ifallsron; Jun 9, 2018 at 02:55 PM. Reason: clarify spec chart
5 Year Member
Joined: Aug 2013
Posts: 269
Likes: 39
From: Clermont county east of Cincinnati
I replaced the Goodyear ATS with the Goodyear Fortitudes on my 2013 F150 RCAB 4X4. Gas mileage is the same, and the traction is much better. The best part was the tire dealer estimated the cost for 17" wheels for the ATS, 4 WD has 18" wheels. Didn't have 18" ATS in stock so they gave me the ATS price. $641.00 out the door for the Fortitudes.
Senior Member
Joined: Apr 2016
Posts: 2,122
Likes: 607
From: Greater Seattle Area
I would not even consider the Goodyear Fortitude HT. If you are looking at a highway tire, the Michelin Defender is the best tire on the road hands down based upon my experience and TireRack reviews.
The 51 PSI max rating has nothing to do with your door sticker. It is the maximum inflation pressure to stiffen the sidewall and prevent flex under load. The weight rating (2679 PSI) is based upon 35 PSI and does not increase with more pressure. The Michelin has a similar weight rating at 35 PSI, but the max pressure is 44 PSI. Additionally, the RPM value is not important for the same size tire. Each manufacturer will vary slightly, but you will not see any difference in the speedometer.
The 51 PSI max rating has nothing to do with your door sticker. It is the maximum inflation pressure to stiffen the sidewall and prevent flex under load. The weight rating (2679 PSI) is based upon 35 PSI and does not increase with more pressure. The Michelin has a similar weight rating at 35 PSI, but the max pressure is 44 PSI. Additionally, the RPM value is not important for the same size tire. Each manufacturer will vary slightly, but you will not see any difference in the speedometer.
Last edited by GMC to Ford; Jun 10, 2018 at 09:17 AM.
Old Fart
Joined: Aug 2013
Posts: 3,001
Likes: 1,264
From: Clinton TN
I would not even consider the Goodyear Fortitude HT. If you are looking at a highway tire, the Michelin Defender is the best tire on the road hands down based upon my experience and TireRack reviews.
The 51 PSI max rating has nothing to do with your door sticker. It is the maximum inflation pressure to stiffen the sidewall and prevent flex under load. The weight rating (2679 PSI) is based upon 35 PSI and does not increase with more pressure. The Michelin has a similar weight rating at 35 PSI, but the max pressure is 44 PSI. Additionally, the RPM value is not important for the same size tire. Each manufacturer will vary slightly, but you will not see any difference in the speedometer.
The 51 PSI max rating has nothing to do with your door sticker. It is the maximum inflation pressure to stiffen the sidewall and prevent flex under load. The weight rating (2679 PSI) is based upon 35 PSI and does not increase with more pressure. The Michelin has a similar weight rating at 35 PSI, but the max pressure is 44 PSI. Additionally, the RPM value is not important for the same size tire. Each manufacturer will vary slightly, but you will not see any difference in the speedometer.
Senior Member
Joined: Apr 2011
Posts: 254
Likes: 52
From: Western Washington State
If your looking for a bit more stability in ride then invest in LT tires in the same rough size/diameter. You will get higher load capacity relative to the tire and even at the same air pressures as stock your truck will feel better planter or more stable towing your travel trailer.