Hey All
I've had a bit of a search and not found an answer to this.
What do you recommend? the plastic Tyre Wrap stuff or tyre covers or nothing? is there an advantage to any of these? Obviously the tyre covers are a 1 time cost and reusable but other then that?
Cheers
Comments12
The tyre wrap preserves the tyre rubber better than a cover but a cover keeps off the sun better. I use both.
I used to use black pallet wrap. Best as it keeps air away form the tyre surface and keeps the light out.
ughes on June 24, 2017 at 22:37
It depends on the tyre. For eg. IMO the Dunlop SL1A was notorious for outgassing, and degrading when exposed to light and this process starts as soon as the sealing wax is removed. You could never judge a SL1A from tread depth, and the best tyres were kept sealed, cool and away from light. However, the latest generation of tyres don't seem to be as affected, but the best option is to keep the tyres cool and out of direct sunlight. Don't store them in a kart trailer which sits out in the sun between race meets. As for wrap, my preference is the Clear wrap as it allows the tread depth and grain to be checked, prevents any spills )oil / fuel etc.) from affecting the tyre, and limits any potential outgassing but it isn't as important as it used to be.
Don't bother tyres don't last long enough
Wrap them in plastic and put them in the bin
If the tyres are going to get used every weekend then it would make less difference but if you are only racing once a month then wrapping them will shorten the number of laps it's going to take to scrub the hard stuff off. Covers keep them dark but I'm not sure it helps stop the volatile elastacisors from escaping.
my to bobs worth the selefane clear in my experience was born when karters started using tyre softener but to complete the outcome the selefane was used only so the shit you painted your tyres with well it evaporated hence the selefane (spelling ) I do agree with keeping the tyres in the dark as it the ultraviolet light that kills the tyres in the long run just for a laugh I have herd ppl say the salefane is used so the oil in the rubber dosnt evaporate. oil in a race tyre that's funny Svend Petersen said:
If the tyres are going to get used every weekend then it would make less difference but if you are only racing once a month then wrapping them will shorten the number of laps it's going to take to scrub the hard stuff off. Covers keep them dark but I'm not sure it helps stop the volatile elastacisors from escaping.
The rubber used in tyres has various kinds of volatile oil infused into the compound, in greater and lesser quantities. Softer tyres tend to have more of it, e.g. racing tyres. Note the word 'volatile' above. This means these oils are prone to evaporation, and do evaporate out of the rubber most strongly when the tyre is heated up, e.g. when racing. This is why racing tyres become gradually harder each time they are used. It's also why tyres become harder just sitting around, i.e. the rate of evaporation is slow when the rubber is cool, but constant, so given enough time the tyre becomes appreciably harder just sitting in the workshop...
Regards,
John.
Hi John I have to kindly disagree with you on evaporation. In my 20 years of working with raw rubber e.g before it is cooked and then using a vulcanising machine to make as we know Rubber. if there is any sort of liquid of any sort when the raw rubber is being cooked in any shape or size , because of the heat that used to make rubber under pressure any liquid would evaporate causing a bubble or as we call it a air bubble just like a blister but this blister is a gas substance. rubber gets hard because of heat and sunlight the softness of rubber softness is measured using the word duro john learmonth said:
The rubber used in tyres has various kinds of volatile oil infused into the compound, in greater and lesser quantities. Softer tyres tend to have more of it, e.g. racing tyres. Note the word 'volatile' above. This means these oils are prone to evaporation, and do evaporate out of the rubber most strongly when the tyre is heated up, e.g. when racing. This is why racing tyres become gradually harder each time they are used. It's also why tyres become harder just sitting around, i.e. the rate of evaporation is slow when the rubber is cool, but constant, so given enough time the tyre becomes appreciably harder just sitting in the workshop...
Regards,
John.
Brett,
That's not my understanding. References below:
From this page:
http://www.greencarcongress.com/2012/03/pah-20q2.html
"Automobile tire rubber in general consists of approximately 40−60% rubber polymers; 20−35% reinforcing agents/fillers such as carbon black or silica; and 15−20% mineral oils such as extender oils/ softeners. Precise compositions vary depending upon where in the tire the rubber is used. Highly aromatic (HA) oils used as extender oils or softeners in the tire-manufacturing process have concentrations of PAHs ranging between 10 to 30%."
And this page:
https://www.formula1.com/en/championship/inside-f1/understanding-f1...
"The actual softness of the tyre rubber is varied by changes in the proportions of ingredients added to the rubber, of which the three main ones are carbon, sulphur and oil. Generally speaking, the more oil in a tyre, the softer it will be. However, whilst softer tyres generally tend to be quicker than harder ones, they’re also less durable."
There seems to be a trend to replace mineral oils with vegetable oils sourced from orange peel, soybeans, sunflowers, and maybe others.
This page:
http://www.yokohama.com.au/Footer/About-Yokohama/Orange-Oil-Tyres.aspx
"From the 2010 racing season Yokohama supplied "eco racing tyres" to the FIA World Touring Car Championship. The newly developed racing tyre has a reformulated rubber compound where the previous oil was replaced by orange oil making the rubber more flexible with improved grip but with reduced environmental impact."
Regards,
John.
thanks john for the info but there is know mention of oil evaporating from tyres as you mentioned in your post
know means no. But u no what I mene! brett ellwood said:
thanks john for the info but there is know mention of oil evaporating from tyres as you mentioned in your post
Ok sorry for the spelling mistake, but good on you best come back ever