Thread: R19 tyre wall dramas

hahaha, I initially read your pss as 'a bottle of jack'.....it would probably help.

Basically, all 19" sidewalls are weak. They have to be because they are designed to run at high speed so they need to be relatively thin, otherwise heat build-up becomes an issue.

That said, it sounds like you've been a bit unlucky. That sort of damage is a result of hitting something - probably a root or something buried in the sand. Its very easy to do without even noticing. At 20psi the sidewalls have a fairly pronounced bulge which makes them more susceptible to damage. Unfortunately you need to run on those pressures on sand.

Chances are you hit something without realising on one of the inland tracks and the heat sitting in the sun at Happy Valley was enough to weaken it to failure.

While there will be some difference in the relative strength of sidewalls in 19" tyres, I don't think any of them are really strong enough for the type of use we subject them to. Avoiding damage comes down to careful management of speed and pressure and a lot of luck.

Cheers,
Jon

Thanks Jon.

I think I'll reconsider by pressures for the inland tracks and so maybe just drop the pressures for the bypasses (ie Ngkala). Never had an issue with the R18's but as you say, it could have been down to luck.

BTW all, I can recommend Gympie Tyres. They got me two new tyres o/night for a better price than what I paid in Brisbane when buying the set, with no charge for the o'night freight.

The 19" ATRs with their H speed rating is likely to have thinner sidewalls than the 19" Duratracs with their S rating.

Originally Posted by WhiteD3

Thanks Jon.

I think I'll reconsider by pressures for the inland tracks and so maybe just drop the pressures for the bypasses (ie Ngkala). Never had an issue with the R18's but as you say, it could have been down to luck.

BTW all, I can recommend Gympie Tyres. They got me two new tyres o/night for a better price than what I paid in Brisbane when buying the set, with no charge for the o'night freight.

The inland tracks can get very soft though. I really think its just down to bad luck - and the margin for error is much smaller on the 19"s even compared to 18"s I think.

I had 18"s on the D3 and even just running GG A/T2s (which was pretty much all you could get then) I don't recall ever getting a puncture off-road. Despite there only being 1/2 an inch more sidewall I think it makes a noticeable difference to its ability to withstand sidewall damage.

Cheers,
Jon

Originally Posted by Graeme

The 19" ATRs with their H speed rating is likely to have thinner sidewalls than the 19" Duratracs with their S rating.

I agree Graeme. The Duratracs seem to be the pick of the 19"s now. I would like to have tried them, but alas I'm stuck with 16"s now.

Cheers,
Jon

What - can't run 15s? How on earth are the tyres going to survive?