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Author Topic: Good article on tires  (Read 311 times)

Offline zrxdean

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Good article on tires
« on: November 21, 2017, 08:12:58 PM »

Online RansomT

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Re: Good article on tires
« Reply #1 on: November 22, 2017, 12:58:13 PM »
Funny that Goodyear already makes a tire that is rated for 300-320 mph (Eagle Land Speed),but Michelin can't make one for those speeds?


I've run 2 different tires in the past several years, Michelin and Shinko (yes, the "hard" Stealth). Felt much more secure running the Michelin, but the Stealth was on the bike for the 250+ runs.  However, I did figure out that the Shinko needed to be changed out for each season because the crown wanted to wear really flat and caused handling issues.  Currently, I'm trying out the Michelin RS.


With that said, I started to realize that I needed to change my attitude about tires a how often I change them.  When I raced at the Shift S3ctor 1/2 mile, I got to know the crew behind the Lambo that went 259+.  They told me they had problems with tires and ask me about mine. They run the Michelin Pilot Cup and change them at least after ever event, sometimes after each day!
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Online Oz Booster

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Re: Good article on tires
« Reply #2 on: November 22, 2017, 01:40:47 PM »
Saw some interestesting tire behavior at the Bolivian salt , besides the chunking from internal heat or contact after speed related growth , and shredding on the coarse salt, the treaded tires were cracking in the bottom of the tread grooves every pass ,270-289mph
Ransom i would not have thought to run Shinko much over 200mph

The 300mph tires have handling problems on bikes on the salt , i have not run them but know 2 that have ,

Its something that needs a lot of investigation  with several people aiming at 300+ in the next year or so on pavement and salt
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Online FlaminRoo

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Re: Good article on tires
« Reply #3 on: November 22, 2017, 02:08:13 PM »
 "or contact after speed related growth", how much were thay growing at those speeds ??
First Australian to ride a motorcycle 200mph at Bonneville,,

Offline zrxdean

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Re: Good article on tires
« Reply #4 on: November 23, 2017, 10:09:18 AM »
Happy turkey day for us Americans :)

I think the issue with the production cars is finding a tire that can go 300 and still be "streetable" and legal.

I think 260-270 on asphalt seems to be OK with good ZR tires, even after multiple passes. Not sure about salt. But after that the data gets slim. The folks shooting for 300 will be the trailblazers. Greg do you know if Ralph Hudson and Al Lamb were changing tires in Bolivia?

Dean


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Re: Good article on tires
« Reply #5 on: November 23, 2017, 01:24:36 PM »
Happy thanksgiving to across the pond

Tires are the major safety issue on any of the current attempts once beyond 250, they may have to forget streetable and legal and just do safer , most other parts of the vehicle are in the builders control if you dont like what is currently available you fabricate to suit , but not tires,

You would have seen Als tire problems in the videos, pretty sure he changes one if not 2 just about every pass, Ralph had less destruction, but they were showing signs of structual stress and we only got the last 2 runs in without a tire change
temperature up there probably did not help , salt is at or near 32f

Ronnie they were growing more than previously experianced by the riders , dont know just how much, not enough to change the calculated speed
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Offline scott g

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Re: Good article on tires
« Reply #6 on: November 24, 2017, 01:35:12 PM »
Happy thanksgiving to across the pond

Tires are the major safety issue on any of the current attempts once beyond 250, they may have to forget streetable and legal and just do safer , most other parts of the vehicle are in the builders control if you dont like what is currently available you fabricate to suit , but not tires,

You would have seen Als tire problems in the videos, pretty sure he changes one if not 2 just about every pass, Ralph had less destruction, but they were showing signs of structual stress and we only got the last 2 runs in without a tire change
temperature up there probably did not help , salt is at or near 32f

Ronnie they were growing more than previously experianced by the riders , dont know just how much, not enough to change the calculated speed

Agreed !

The on-board cameras on Al Lamb's 1000cc
Honda show the FRONT tire chunking at speed.

Offline KZScott

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Re: Good article on tires
« Reply #7 on: November 25, 2017, 05:26:25 PM »
Happy thanksgiving to across the pond

Tires are the major safety issue on any of the current attempts once beyond 250, they may have to forget streetable and legal and just do safer , most other parts of the vehicle are in the builders control if you dont like what is currently available you fabricate to suit , but not tires,

You would have seen Als tire problems in the videos, pretty sure he changes one if not 2 just about every pass, Ralph had less destruction, but they were showing signs of structual stress and we only got the last 2 runs in without a tire change
temperature up there probably did not help , salt is at or near 32f

Ronnie they were growing more than previously experianced by the riders , dont know just how much, not enough to change the calculated speed

Agreed !

The on-board cameras on Al Lamb's 1000cc
Honda show the FRONT tire chunking at speed.


it was rubbing the shit out of the rad/water tank.
01 ZX-12R 8.84 @ 156.3 on dot tires, pump gas, NO power adders.... turbo 8.47 @ 164
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