Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Grand Cherokee SRT - WK2 (http://www.jeepgarage.org/f97/)
-   -   Gravel roads (http://www.jeepgarage.org/f97/gravel-roads-69527.html)

davidl13 12-23-2013 04:09 AM

Gravel roads
 
Hey all...

I have a 2012 srt8 and i moved to montana... Round trip i travel 8 miles on gravel roads and i have had 3 flat tires in the past 3 weeks...

I believe i am in need a tire with more capability of handling the abuse the roads are dishing out...

Its not the snow, its the gravel....

I sure would like to keep my srt.... But i am on the verge of trading it in for a f150....

Can anyone point me to a tire that will fit on these rims??? Or an 18" rim that will fit over these brakes... Or something... Or i will have to get rid of it, for something with more meaty tire capability...


Thanks in advance

David

SRTBLK 12-23-2013 07:08 AM

Re: Gravel roads
 
[QUOTE=davidl13;949243]Hey all...

I have a 2012 srt8 and i moved to montana... Round trip i travel 8 miles on gravel roads and i have had 3 flat tires in the past 3 weeks...

I believe i am in need a tire with more capability of handling the abuse the roads are dishing out...

Its not the snow, its the gravel....

I sure would like to keep my srt.... But i am on the verge of trading it in for a f150....

Can anyone point me to a tire that will fit on these rims??? Or an 18" rim that will fit over these brakes... Or something... Or i will have to get rid of it, for something with more meaty tire capability...


Thanks in advance

Do you have all seasons or three season tires?

Red Suns 12-23-2013 07:56 AM

What tire and PSI spec are you currently running?

Are you getting punctures on the tread or on the sidewalls?

If you don't mind running a thicker tire, you can slap on some 285/55-20 sized shoes for your rig. Do a search on tirerack.com and you'll see some good all terrain options that should fit your stock wheels. This larger size will throw your speedo off but it all comes down to how bad do you want to make it work.

BTW, 18" wheels will not clear the Brembos up front.

jbjones85 12-23-2013 07:57 AM

Can you explain the failure mode of the tires? PunctureS? Gravel chewing through the sidewall, ext.

Thank you.

davidl13 12-27-2013 08:32 AM

Re: Gravel roads
 
All punctures have been through the tread on new siped 4 season hankook ventus st tires... 295 45 20

Tire pressure is about 38-40..


I would have no problem switching to a slightly different size if i could find a 10 ply that would fit on the rim and in the wheel wells.....

Larger would be better for ground clearance as well... Since we dont have the quadralift...

D

jbjones85 12-27-2013 08:37 AM

Quote:

Originally Posted by davidl13 (Post 950667)
All punctures have been through the tread on new siped 4 season hankook ventus st tires... 295 45 20 Tire pressure is about 38-40.. I would have no problem switching to a slightly different size if i could find a 10 ply that would fit on the rim and in the wheel wells..... Larger would be better for ground clearance as well... Since we dont have the quadralift... D

I'm not really sure if it would help or not but I'm pretty sure the pressure recommendation is quite a bit lower than 38-40.

davidl13 12-27-2013 08:43 AM

Re: Gravel roads
 
Quote:

Originally Posted by Red Suns (Post 949270)
What tire and PSI spec are you currently running?

Are you getting punctures on the tread or on the sidewalls?

If you don't mind running a thicker tire, you can slap on some 285/55-20 sized shoes for your rig. Do a search on tirerack.com and you'll see some good all terrain options that should fit your stock wheels. This larger size will throw your speedo off but it all comes down to how bad do you want to make it work.

BTW, 18" wheels will not clear the Brembos up front.


Have you tired the 285-55-20... ? Will the car turn without rubbing????

D

davidl13 12-27-2013 09:04 AM

Re: Gravel roads
 
Quote:

Originally Posted by jbjones85 (Post 950668)
I'm not really sure if it would help or not but I'm pretty sure the pressure recommendation is quite a bit lower than 38-40.


The tire is rated at 44...

4jeepdiesel 12-27-2013 09:19 AM

Re: Gravel roads
 
Go with the Goodyear Adventure ATs (the old Silent Armor). They have a couple layers of Kevlar. I drove 83000 miles on the Silent Armors without a flat ever and I drove on off-road and lots of gravel.

The Adventure ATs that I have on now seem to be even better.

You could also go with a LT tire that has more plyes to it but your ride will be rougher.

Red Suns 12-27-2013 11:57 AM

I have not personally had the pleasure of running my suggested tire size. However check out Badassdad's build thread in the WK2 SRT Show Off section as he is apparently running 285/50R20 for his snow tires. PM him and see if is willing to give you any info regarding how much tire clearance he has on a wider diameter setup with a 50 series tire.

However first and foremost, the first thing i would do is lower your tire pressure to 32psi as previously implied above. 38-40 PSI is way too high on gravel roads with a street or an all terrain tire. I'm not familiar with the Hankook tires that you are running, so i have no idea if they are a lesser tire when it comes to gravel in comparison to other street tires. Regardless of the fact that your tire is rated for a higher PSI spec, the fact that your tire has less give with a higher inflation quotient really does increase your exposure to road hazard punctures.

Lower your tire inflation PSI and go from there.

jbjones85 12-27-2013 12:09 PM

Re: Gravel roads
 
Quote:

Originally Posted by davidl13 (Post 950674)
The tire is rated at 44...


yes, but I think that the door label from SRT recommends using 32-33 PSI (at least for the stock tires), again not sure if it will really help but I can't see it hurting anything. The tire will deform more vs puncture... Worth a shot I would think.

boss.man 12-27-2013 12:40 PM

Re: Gravel roads
 
I run my tires normally at 36PSI but when I go driving on the beach which is a mix of sandy parts and gravel parts, I deflate my tires to 30 PSI before I leave the asphalt


All times are GMT -5. The time now is 12:26 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community