Pirelli Diablo Rosso II tread life

[NAKID]

So, now I don't know how much if any this applies to moto tires, but this is pretty interesting:

https://www.tacomaworld.com/tirecalc?tires=180-60r17-190-55r17

[Speeddog]

*Theoretically* it applies in the same way.

[NAKID]

*Theoretically* it applies in the same way.

Right. But I'm wondering how the profile of the tire may be different between the two.

Now, assuming this calculator is accurate, is the 1.1% difference in circumference going to screw with the TC? I'd think it wouldn't. I would assume (again, strong word) that there is a bit of tolerance built into the software to accommodate for wear of the tire.

Yes? No?

[DarkMonster620]

that 1.1% shouldn't affect  . . . there is about 5% tolerance but, the closer the better

[ducpainter]

Right. But I'm wondering how the profile of the tire may be different between the two.

Now, assuming this calculator is accurate, is the 1.1% difference in circumference going to screw with the TC? I'd think it wouldn't. I would assume (again, strong word) that there is a bit of tolerance built into the software to accommodate for wear of the tire.

Yes? No?

My only experience is with a 1098...I think it was the 1098...that came with Stones and the TC would not work with the same size Dunlop or Michelin tire.

I don't know if they've built more flexibility into the parameters. You'd think if they truly wanted flexibility they'd put an adjustable circumference parameter into the software, like they do with electronic speedos, so it would work with any size tire.

[Speeddog]

Circumference will change at least 2-3% over the life of the tire.

From the chatter I've seen, the TC does somehow have a problem.

I really can't see how it does have a problem.
The profile of a tire changes dramatically as it wears, usually flat in the center with a slightly flattened area on each side of that, blending into the untouched area on the shoulder.
Occasionally, two flats on either side for a hard-riding canyon runner.

[NAKID]

My only experience is with a 1098...I think it was the 1098...that came with Stones and the TC would not work with the same size Dunlop or Michelin tire.

I don't know if they've built more flexibility into the parameters. You'd think if they truly wanted flexibility they'd put an adjustable circumference parameter into the software, like they do with electronic speedos, so it would work with any size tire.

Well, I'll let you know next week. Ordered the 190/55/17 Pirelli Angel GT (figured I'd stick with the same brand). Considering most of my riding is commuting and I'm starting to carry a passenger more, I'd go this route rather than the PR.
After just over 6000 miles, this Rosso II is showing belt.

[Speeddog]

My ex-Ducati source (who I expected would know, due to his previous position) said he was not aware of any problem with tire swaps on M820 and Pani899.

[NAKID]

My ex-Ducati source (who I expected would know, due to his previous position) said he was not aware of any problem with tire swaps on M820 and Pani899.

Good to know. I certainly hope not. I don't like to be the guinea pig in this scenario...

[Speeddog]

The internet chatter seemed to be saying that if the TC was turned down low or off (?) it would work.

Just chatted with a customer with a '14 899Pani, said he fitted a 180/55 and saw no issue.
He had the traction control turned down low, but he said the TC light would still come on occasionally when accelerating hard in 1st or 2nd, indicating the TC was still intervening.

Perhaps the earlier years had an issue, and they fiddled with the software.

Good news is that's a popular size of tire, so you can flip it easy if it doesn't work.