Trailhawk Snow Chains - Page 2 - 2014+ Jeep Cherokee Forums
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post #11 of 36 (permalink) Old 02-17-2015, 11:21 PM Thread Starter
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Here are the California chain requirements . I am looking to drive in R1 & R2

TYPES OF CHAIN CONTROLS:
During the winter months, motorists may encounter traction chain controls in the mountain areas within California. When chain controls are established, signs will be posted along the road indicating the type of requirement. There are three requirements in California.

Requirement One (R1): Chains, traction devices or snow tires are required on the drive axle of all vehicles except four wheel/ all wheel drive vehicles.

Requirement Two (R2): Chains or traction devices are required on all vehicles except four wheel/ all wheel drive vehicles with snow-tread tires on all four wheels.
(NOTE: Four wheel/all wheel drive vehicles must carry traction devices in chain control areas.)

Requirement Three (R3): Chains or traction devices are required on all vehicles, no exceptions.

SNOW-TREAD TIRES:
The California vehicle code section 558 defines a snow-tread tire as follows, " A 'Snow-tread tire' is a tire which has a relatively deep and aggressive tread pattern compared with conventional passenger tread pattern". Snow-tread tires can be identified by examining the sidewall of the tire where the letters MS, M/S, M+S or the words MUD AND SNOW have been stamped into the sidewall.

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post #12 of 36 (permalink) Old 02-17-2015, 11:32 PM Thread Starter
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Also, it looks like the Firestone tires on the Jeep Trailhawk are P245 / 65R17 M+S.

I also found an old thread on this topic (and it looks like I started that thread too):
http://jeepcherokeeclub.com/4-2014-2...ow-chains.html

Maybe we can resolve which are the best chains to carry with the Trailhawk to be compliant with CA law for the R2 chain requirements. (We don't need chains for R1 & R2 since the tires are M+S).

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Ordered 11/1/2014 - Picked up 12/30/2014. Chrysler Lifetime Warranty, $100 Deductible.
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post #13 of 36 (permalink) Old 02-18-2015, 12:20 AM
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Okay I am thinking of getting these chains:

Super Z6, SZ135 chains size SZ435
http://www.amazon.com/Security-Compa...4228916&sr=1-3

I believe these are the right size for my tires (P245 / 65R17 OWL All Terrain Tires), and they require only 6mm (1/4") of sidewall clearance to operate, though they still probably don't have enough room to fit on the Trailhawk they should make me legally compliant in California.

I do wonder though if they will fit if I don't turn the wheels too far. Any thoughts?
I have a set of unused SZ435 from my previous vehicle. I'll try a test fit and pics, but will be travelling for the next week+.

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post #14 of 36 (permalink) Old 02-18-2015, 12:54 AM
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To be honest. You're not going to be forced to put the chains on until conditions are R3, and CalTrans, in 99% of the cases is going to shut down the road long before R3 is declared.

Just get a cheap set of chains (that don't fit), put em in the back in case law enforcement ever asks to see them, and drive only in R1/R2, which you should be doing anyway.

I have the Trailhawk too. I don't ever plan to put chains on them, I'm just going to get a set so I can point them out, but I wont be putting em on.

Longer version - I previously owned a XJ Cherokee with BFG A/T tires. I happened to be traveling through Tahoe one christmas night. It was snowing heavily all night long, heavy snow on the roads, 25mph limit, they had chain control up every few miles.

At every chain control, the guy took a look at my tires, checked my 4x4 and waved me through. I never was once asked to show possession of chains.
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post #15 of 36 (permalink) Old 02-18-2015, 11:05 AM
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For what it's worth, for the past 7 years I have traveled over Donner Pass 5 days a week in every imaginable driving scenario. My Office is at 7198 Feet. I have never seen R3 Restrictions. The road will be closed before that. The only time R3 will be put in place is if you are caught inside a closure and get snowed in. However, like I said, I've seen it all and never had to put chains on my 4WD vehicles.

Get a set of cables and keep them in the car for piece of mind. You will probably never use them, but it's better to have them and not need them, than to need them but not have them.
.
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post #16 of 36 (permalink) Old 02-18-2015, 12:53 PM Thread Starter
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Quote:
Originally Posted by Rojhan View Post
I have a set of unused SZ435 from my previous vehicle. I'll try a test fit and pics, but will be travelling for the next week+.
Thanks! I am interested to see how tight a fit it is.

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Ordered 11/1/2014 - Picked up 12/30/2014. Chrysler Lifetime Warranty, $100 Deductible.
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post #17 of 36 (permalink) Old 02-18-2015, 12:55 PM Thread Starter
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From the Cal Trans website:

R1 and R2 are the most common conditions. The highway is usually closed before an R3 condition is imposed.

http://www.dot.ca.gov/hq/roadinfo/wo.htm

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post #18 of 36 (permalink) Old 02-19-2015, 10:06 PM
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aren't you guys still having a drought? You will be lucky to see an R1 these days...
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post #19 of 36 (permalink) Old 02-19-2015, 10:51 PM
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Originally Posted by dumper View Post
aren't you guys still having a drought? You will be lucky to see an R1 these days...
Maybe he is driving to Oregon!

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post #20 of 36 (permalink) Old 02-19-2015, 10:58 PM
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Maybe he is driving to Oregon!
Sure, come on up! Don't need chains here either- no snow. Try Boston.
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