P-Metric vs LT

Anything concerning your jeep... Repairs, parts, etc
Joleat
Newb
Posts: 38
Joined: Fri Mar 25, 2016 8:25 pm
Vehicle: 2013 JK
Location: Charleston, WV

P-Metric vs LT

Post by Joleat » Tue Mar 29, 2016 4:18 pm

Yesterday, I ordered 5 285/70R17 Cooper Discoverer AT3s through my local tire shop. I specifically asked for P-Metric tires because the LT equivalent is a Load Range E, which I figured would be too harsh for the lightweight JK. I won't be towing anything and I can't imagine I would come remotely close to exceeding the safe weight of a P-Metric tire. However, I had one heck of a sleepless night last night and I'm wondering if I shouldn't have just gone with the LTs for the added sidewall strength and puncture resistance. I've purchased at least 10 sets of tires through this installer, so I know the owner won't mind if I ask for LTs instead.

The P-Metric go for ~$185
The LT go for ~$215

Thoughts?
Roads? Where we're going, we don't need roads...

User avatar
SLADE
Post Whore
Posts: 4756
Joined: Tue Jan 29, 2008 8:11 am
Location: Kingwood WV 26537

Re: P-Metric vs LT

Post by SLADE » Tue Mar 29, 2016 6:08 pm

I won't avoid a tire because of a high load rating.
2014 Wrangler Unlimited
2013 Wrangler
2004 Wrangler
2001 Dodge Ram 2500

User avatar
smccollamjr
WVJC Member
Posts: 5508
Joined: Tue Jan 29, 2008 9:21 am
Vehicle: '00 TJ
Location: Sissonville, WV

P-Metric vs LT

Post by smccollamjr » Tue Mar 29, 2016 7:56 pm

The only draw back I can think of with a higher load range, other than harsher ride, is that they don't flex as much when you air them down.
<><
'00 TJ/4.0/NV3550/D30(Aussie)/D44(E-Locker)/4.88s/1"MML/1.25"BL/UCF TT
Build Thread: viewtopic.php?f=51&t=26137
SOLD-'96 XJ, Build Thread: viewtopic.php?f=51&t=6523

User avatar
wharthog69
WVJC Member
Posts: 1991
Joined: Mon Oct 12, 2009 3:08 pm
Vehicle: 2008 JK

Re: P-Metric vs LT

Post by wharthog69 » Tue Mar 29, 2016 8:09 pm

smccollamjr wrote:The only draw back I can think of with a higher load range, other than harsher ride, is that they don't flex as much when you air them down.

This.

No direct experience, but I've read that folks have trouble with JK's having enough weight to flex the sidewalls in E rated tires. I don't think you'll regret your decision long term.

I *DO* have experience tearing the sidewall out of a tire on the trail. D-rating, E-rating, ZZ-Top rating wouldn't matter.

Kevlar, on the other hand, does help (or at least it seems too, I have cuts in my sidewalls that would disable other tires, not a drop leaks).

Forester
Newb
Posts: 41
Joined: Wed Feb 03, 2010 9:48 pm
Vehicle: 2010 JKU
Location: Maple Valley

Re: P-Metric vs LT

Post by Forester » Tue Mar 29, 2016 8:21 pm

I would echo the same advice.
I ordered some c-load range tires a couple years ago. E-load tires were accidentally installed. instead of removing them, the tire shop let me have them at the c-range price. I thought "Good Deal"

Hated the ride.
At the beach, even with 10lbs or less pressure, the sidewalls wouldn't flex enough. My Jeep felt helpless in the sand.
However, aside from the two weeks I went surf fishing with those tires, and the rough drive to the Outer Banks, I never cut a sidewall or got a flat in my daily use.

User avatar
ledzep_06
Web Wheeler
Posts: 2538
Joined: Mon Jun 25, 2012 7:40 am
Vehicle: 2013 JK
Location: South Charleston

Re: P-Metric vs LT

Post by ledzep_06 » Tue Mar 29, 2016 9:00 pm

they don't flex as much when you air them down.
Air down farther, they will flex.
If your not crawlin, you must be mallin.

Joleat
Newb
Posts: 38
Joined: Fri Mar 25, 2016 8:25 pm
Vehicle: 2013 JK
Location: Charleston, WV

Re: P-Metric vs LT

Post by Joleat » Tue Mar 29, 2016 9:22 pm

I've been reading horror stories about P-Metric tires off road. I even watched a video where a guy ended up with three slashed sidewalls within 10 minutes and the road he was on was in better shape than the driveway to the house where I grew up, haha. I know my kidneys aren't going to appreciate LTs though...
Roads? Where we're going, we don't need roads...

User avatar
J-rod
Moderator
Posts: 7653
Joined: Tue Jan 29, 2008 1:24 pm
Vehicle: 2008 JK, 2005 KJ
Location: Farmington WV

Re: P-Metric vs LT

Post by J-rod » Tue Mar 29, 2016 9:45 pm

You bought a Jeep not a Caddy. As long as you don't piss blood it isn't too bad of a ride
Jared:
His: 2008 JK Unlimited Build Thread
Her's: 2005 KJ
Building a capable off road Jeep is easy...building a street legal one that you can drive two hours away to wheel and then drive to work the following morning is the challenge.

Joleat
Newb
Posts: 38
Joined: Fri Mar 25, 2016 8:25 pm
Vehicle: 2013 JK
Location: Charleston, WV

Re: P-Metric vs LT

Post by Joleat » Tue Mar 29, 2016 9:50 pm

Thank you for your valuable insight.
Roads? Where we're going, we don't need roads...

User avatar
J-rod
Moderator
Posts: 7653
Joined: Tue Jan 29, 2008 1:24 pm
Vehicle: 2008 JK, 2005 KJ
Location: Farmington WV

Re: P-Metric vs LT

Post by J-rod » Tue Mar 29, 2016 9:58 pm

Joleat wrote:Thank you for your valuable insight.
I'm sure that's sarcasm but you're welcome anyways. :lol:
Jared:
His: 2008 JK Unlimited Build Thread
Her's: 2005 KJ
Building a capable off road Jeep is easy...building a street legal one that you can drive two hours away to wheel and then drive to work the following morning is the challenge.

User avatar
J-rod
Moderator
Posts: 7653
Joined: Tue Jan 29, 2008 1:24 pm
Vehicle: 2008 JK, 2005 KJ
Location: Farmington WV

Re: P-Metric vs LT

Post by J-rod » Tue Mar 29, 2016 9:59 pm

But really an AT3 isn't much of an off-road tire so if the P makes you feel better on pavement then roll with it.
Jared:
His: 2008 JK Unlimited Build Thread
Her's: 2005 KJ
Building a capable off road Jeep is easy...building a street legal one that you can drive two hours away to wheel and then drive to work the following morning is the challenge.

Joleat
Newb
Posts: 38
Joined: Fri Mar 25, 2016 8:25 pm
Vehicle: 2013 JK
Location: Charleston, WV

Re: P-Metric vs LT

Post by Joleat » Wed Mar 30, 2016 9:52 am

So here's an interesting thought...

According to Jeep's 2013 JK manual, the maximum weight the rear tire carrier is designed to carry is 50 lbs. This increased the following model year, but I question whether or not the construction of the tailgate actually changed.

Stock 18" Sahara wheels weigh in at 27 lbs. and stock P255/70R18 Bridgestone Duelers weigh in at 44 lbs. The combined weight is 71 lbs., which already exceeds what Jeep says is "safe".

This information is not confirmed, but based on some posts within another Jeep forum, the 17x8.5 Level 8 Trackers I ordered weigh ~25 lbs. The LT285/70R17 Cooper AT3s weight 55 lbs. (confirmed by Cooper) and the P285/70R17 Cooper AT3s weight 45 lbs. (also confirmed by Cooper). Therefore, the combined weight of the wheel and tire combos are 80 lbs. and 70 lbs., respectively.

If the factory combo weighs 71 lbs., I'm not too worried about an additional 9 lbs. for the LTs. I'll just white-out that sentence in my manual until I can add the AEV carrier to my bumper. :)
Roads? Where we're going, we don't need roads...

User avatar
J-rod
Moderator
Posts: 7653
Joined: Tue Jan 29, 2008 1:24 pm
Vehicle: 2008 JK, 2005 KJ
Location: Farmington WV

Re: P-Metric vs LT

Post by J-rod » Wed Mar 30, 2016 10:16 am

Good info and you'll be fine.

If you have any concern at all purchase and install the MBRP rear tire carrier reinforcement kit.

I ran it on mine while carrying a stock JK 17" and 35" KM2.
Jared:
His: 2008 JK Unlimited Build Thread
Her's: 2005 KJ
Building a capable off road Jeep is easy...building a street legal one that you can drive two hours away to wheel and then drive to work the following morning is the challenge.

Joleat
Newb
Posts: 38
Joined: Fri Mar 25, 2016 8:25 pm
Vehicle: 2013 JK
Location: Charleston, WV

Re: P-Metric vs LT

Post by Joleat » Wed Mar 30, 2016 11:34 am

I just called my tire guy and it turns out they actually stock the LTs. He said it won't be a problem if I decide to go with them instead of the Ps. He also said they're $210 instead of $215. It's a minimal cost difference, but everything helps I guess.
Roads? Where we're going, we don't need roads...

Engineer_Eric
Rookie
Posts: 133
Joined: Mon Sep 29, 2014 12:19 pm
Vehicle: 2005 Jeep LJ, 5.3L V8
Location: Bruceton Mills

P-Metric vs LT

Post by Engineer_Eric » Wed Mar 30, 2016 12:23 pm

If you want to go bigger and save some cash I will have a set of them in 315/70/17 available soon. 2 are 30% and 2 are 50%, I also have two off brand for spares in the same size $175 for all 6. They wear good, do well in snow, very quiet, taken them on trails and been impressed but the ride is fairly harsh, I am running 22 psi and that has seemed to be the best compromise of ride vs decent handling and even wear
2005 LJ with 2008 Chevy 5.3, 4L60E, 5.5" RE short arm, ford 8.8 with grizzly & 4.88s, HP30 with truetrac, 37" BFG AT, XRC bumpers, superwinch 9500

Post Reply