I’m thinking of going on a snow run, so I opened the California Transportation Department (CalTrans) FAQ on snow chains
:link: (probably my first mistake).
The most relevant Q&A’s in the FAQ reads as follows.
If I have 4-wheel-drive, do I need to carry chains?
Yes. Even though weather conditions may not warrant the use of chains on 4-wheel-drive vehicles at a particular time, to enter a chain control area, you must have a set of chains (for one drive axle) for your vehicle in your possession. If conditions worsen or you have trouble controlling your vehicle, you must stop and install the chains.
If I have snow tires, do I need to carry chains?
Yes. Even though weather conditions may not warrant the use of chains on passenger vehicles equipped with snow tires at a particular time, to enter a chain control area, you must have a set of chains (one pair) for your vehicle in your possession. If conditions worsen or you have trouble controlling your vehicle, you must stop and install the chains.
So, in CalTrans infinite wisdom I need chains to enter a chain control area even if I have 4 wheel drive and snow tires, so I guess I better get snow chains.
I looked in the owner’s manual (which may have been my second mistake) to see what it said about snow chains.
They start off with this nearly useless cautionary statement, "If your vehicle has LT285/75R16 or P265/65R18 size tires, do not use tire chains. They can damage your vehicle because there is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension, or other vehicle parts. The area damaged by the tire chains could cause you to lose control of your vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on your vehicle and tire size combination and road conditions. Follow that manufacturer’s instructions. To help avoid damage to your vehicle, drive slowly, readjust, or remove the device if it is contacting your vehicle, and do not spin your vehicle’s wheels. If you do find traction devices that will fit, install them on the rear tires."
Followed by this, "Notice: If your vehicle has a tire size other than LT285/75R16 or P265/65R18 use tire chains only where legal and only when you must. Use chains that are the proper size for your tires. Install them on the tires of the rear axle. Do not use chains on the tires of the front axle. Tighten them as tightly as possible with the ends securely fastened. Drive slowly and follow the chain manufacturer’s instructions. If you can hear the chains contacting your vehicle, stop and retighten them. If the contact continues, slow down until it stops. Driving too fast or spinning the wheels with chains on will damage your vehicle."
In a futile effort to diminish my confusion, I called Tustin Hummer and talked to my service representative. This seemed like a reasonable approach since he makes the determination if repairs are covered under the warranty or not and I can always say you said it was OK. He said I should only use the cable type snow chains (or snow cables) and only on the rear tires. Since the front tires rub the anti-sway bars at full lock that seems like a reasonable solution. I guess I’ll get a set of cable chains.
I researched the effectiveness of snow chains and snow cables and the consensus seems to be that they are equal in snow but the chains provide better traction on ice.
I also considered the ladder type and the “z” or zigzag cable arrangement. The ladder type are supposed to be better for off road use whereas the zigzag arrangement is quieter and better on road. However, this seems to be a mute point since the only snow cables I could find that fit my tires are the ladder type.
I have started a search for snow cables but it seems most will not fit on 315/75R16 tires (what kind of idiot would use snow cables on 35” tires? Don’t answer that it was a rhetorical question). So far I have found that two or three that claim to fit.
- pewag makes a set of snow cables stock number 2037C that fit 35” tires (i.e. 315/75R16) :link:.
- Glacier Cable Snow Tire Chains for Heavy Trucks PW2037C (probably the same at the pewag 2037C) :link:.
- Peerless Chain Part #0303554 :link:.
If anyone is aware of any other snow cables that will fit 315/75R16 tires I would appreciate a link.