Cooper Discoverer STT Pros or Nitto Ridge Grappler on Sport JLU Pictures Needed

Remmy

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They definitely hum a bit but it's not bad and you get used to it. (Hardtop)

My 37" Ridge Grapplers on my truck are definitely quieter.
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Chief20

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Mopar 2" springs with Rancho shocks and Metalcloak track bars and control arms.
Beefed it up a little more recently with Yokohama 37's

MDdRx59.jpg
Thank you, fox shocks that came with the mopar lift, you tossed em and switched them for the rancho? Better quality? I was looking into the metal cloak lift kit, more money but it comes with everything instead of shopping for individual parts. I got a sport altitude 4 door. If for your opinion is it ok To run 35’s with the mopar life without replacing anything else, because i keep seeing mixed reviews about the ratio and re gearing or not.
 

Sharkbite22

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Thank you, fox shocks that came with the mopar lift, you tossed em and switched them for the rancho? Better quality? I was looking into the metal cloak lift kit, more money but it comes with everything instead of shopping for individual parts. I got a sport altitude 4 door. If for your opinion is it ok To run 35’s with the mopar life without replacing anything else, because i keep seeing mixed reviews about the ratio and re gearing or not.
I ordered the springs separately. You can get them very cheap from online mopar parts stores. I already had the Rancho's from the RC spacer lift I started with. I have the 6 speed tranny in mine and I know there are people on here that run stock sport gears with 35's but I thought it was terrible. I have 488 gears and it worked great with the 35's but I think 513 would be even better now with the 37's. It seems that the automatic trans works a lot better with larger tires and stock gearing on the JL's.
 

traviswalker007

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I ran the Cooper stt pros in 37x12.50x17 and the wear pattern is very hard to maintain, I got about 20k miles before it felt like i was riding over rail road tracks. I rotated, chalk tested and ran about every PSI you could think of but the tires won so I ended up replacing them this week with Nitto Ridge Graps same size. The look on my jeep is very different from a front to rear, as the ridge Graps look allot narrow than the stt pros, a look I'm not really liking so far. The side by side comparison you will notice the wider tread design on the stt pros but again the Ridge is not classified as a mud tire but a hybrid. The drive home was weird to be honest, felt like the tires were mushy and loved to chase the cracks in the road. I got this weird ass low hum from all speeds and the faster you go the louder it gets, im going back to tire shop on Monday to see if i got a bad batch but sounds like a tranny wine almost very odd sound from these tires. current PSI set to 29 so not sure.
 

traviswalker007

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Replaced the Shittos with BFG KM3 37x12.50x17. I'm impressed with the ride so far, but again why are they so narrow?? blows my mind BFG cant make a true 12.50 contact patch tire.
 
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Spearmin

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I put up with the STT Pros because they look so damn good. The side treads remind me of the ridges on a crocodile's back.
 
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