Tire guys; why can't tires be siped a second time?

[HUNTINCOUPLE]

Not a fan of Les Schwab but was there one time waiting on something and they had a Led Schwab History book and a section talked about sipping. It had some real good info from testing they had done through the years and seemed all was positive for your standard tires for on road and light off road.

[Bean Counter]

The last time I had tires siped, it was a re-sipe... that was 10 years ago now.

[Alchase]

Added Siping actually decreases your tire longevity substantially and decrease traction in dry conditions.
Siping increases traction in in wet and snowy conditions only temporarily. Once half the sniping is worn, the tires have worse wet then non-sniped.
In the extensive testing Consumer reports did, they recommended not added sniping, over what most tires already come with.

[MtnMuley]

You CAN sipe tires more than once.  Most places won't do it.  I generally run a slight center swipe on new rubber, then about half wear, I resipe the whole tire.  The other reason for not siping the tires a second time, is because they don't want to risk chipping their siping wheel from an inadvertant rock in your other sipe or tread.  The only time I wouldn't sipe tires is if I planned on running that rubber off road primarily on gravel roads.  They will get eaten up then.

[sirmissalot]

Siping tires that will be used off road has not worked well for me. They do not last long as all the extra slices get rocks jammed in them and end up turning into chunks of missing rubber. For road tires they seem to last fine.

You would think all these big tires manufacturers would send the tires out already siped if it truly was a benefit to the life and traction of the tire... 

[TheSkyBuster]

Added Siping actually decreases your tire longevity substantially and decrease traction in dry conditions.
Siping increases traction in in wet and snowy conditions only temporarily. Once half the sniping is worn, the tires have worse wet then non-sniped.
In the extensive testing Consumer reports did, they recommended not added sniping, over what most tires already come with.

Do you have a link to this information?

[MtnMuley]

You would think all these big tires manufacturers would send the tires out already siped if it truly was a benefit to the life and traction of the tire... 

Why would they.   I will guarantee they would rather have you buy another set rather than get an extra 5-10K miles out of them.

[rtspring]

Had two sets siped, both 37 inch toyos MT. Best frickin tires I have ever owned.  They both lasted about 75,000 on both sets! Thats on gravel, paved and hellish roads!!

Love them.. 

If your wearing out tires you might want to slow the hell down! Just sayin

[Rick]

You would think all these big tires manufacturers would send the tires out already siped if it truly was a benefit to the life and traction of the tire... 

Basically the only tires that aren't adequately siped from the factory are mud tires. That's never an issue except for the guys that insist on running mud tires on trucks that never see anything more than pavement or a gravel road.

Mud tires look cool but suck in rain,snow or ice. Guys would rather have cool looking tires than a tire that actually fits their need 99.9% of the time,so they have them siped to try and make up for the mud tires deficiency on pavement.

[sirmissalot]

You would think all these big tires manufacturers would send the tires out already siped if it truly was a benefit to the life and traction of the tire... 

Why would they.   I will guarantee they would rather have you buy another set rather than get an extra 5-10K miles out of them.

You don't think the company selling the tires would think the same way? All I have is experience to go off of, and that is siping for offload tires does more harm than good.

[Special T]

Siping tires was developed as a commercial application for hwy semi truck tires to increase traction on wet/slippery surfaces while not increasing drag over paved surfaces.  Siping is different that the other small groves in tires like snow tires. In a new tire those small lines in the rubber are created from a void in the rubber mold. (there is aluminum in the mold to prevent rubber from accumulating there. ) Factory voids and siping act differently  in wear but not in handling. Increased edges create more grip for both edges however the larger the void between 2 pieces of rubber the more they have increased wear. Compare a mud terrain tire to an all season or hwy tire.

Siping a 4x4 tire is trying to reduce the excessive wear from using an off road tire on the road... A misapplication of use. IMO the only tire i have seen really helped from siping is the Interco TSL Super Swamper. the main reason for it is its design. If that tire is over inflated it mostly runs on the two ribs that run down the center. Siping those two ribs decreases the wear on those two ribs while pounding pavement.

If you want the maximum bang for your buck I would recommend an all season or all terrain tire on your 4x4 that you commute in. A winch and good set of link chains, will save you off road and your pocket book over the long term. If you have a dedicated hunting/ off road right then buy what ever aggressive tire floats your boat.

[MtnMuley]

You would think all these big tires manufacturers would send the tires out already siped if it truly was a benefit to the life and traction of the tire... 

Why would they.   I will guarantee they would rather have you buy another set rather than get an extra 5-10K miles out of them.

You don't think the company selling the tires would think the same way? All I have is experience to go off of, and that is siping for offload tires does more harm than good.

I guess I'm confused by your first sentence? If the tire companies sent out siped tires and people used them for the wrong applications, then I highly doubtly think they'd be in business long with all the returned chunked out tires.  Also, if you read my previous post, you will see that I also mentioned using siping for off road tires isn't my recommendation.  However, I center sipe all mud tires that I use in the winters, and have had great luck with better traction of icy roads.