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Old 10-22-2014, 02:39 PM   #1
cjbecker OP
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Not your normal tire size thread.

Ok I'm looking to get new tires for next season. First I'm riding a 1985 r80rt thats turning into a fun aggressive bike. Im on bt45s now and the rear just did not last very long. Might be because I'm not aggressive enough in the turns but the tire flattened out, and I'm now getting front end wobbles from it. The sizes I'm running now are 100/90-18 front and 120/90-18 rear.

I like the bt45s but ready to try something different.

The tires I'm getting interested in are the Conti Road Attack 2CR (classic race)
And these are not the conti classic attacks

These tires have apparently been doing really good in different racing series and want to see that they could do for me. I also can't find anything on here about them, or an airhead rider using them and would like to try them out.

review

website

They don't come in the sizes that are made for my bike (90/90-18 and 120/90-18) But they do come in 100/90-18 for the front and 130/80-18 rear)

Has anybody here happen to run those tires or have run tires in that size?
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Old Yesterday, 03:34 PM   #2
Rucksta
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I've run 100/90 with 130/80 although not the brand you asked after.
The result was a less fun bike that required a more aggressive style.

BT45s are a dual compound tyre hard in the middle, soft on the edges and have a reputation for wearing well for the amount of stick on offer.

How are your tyre pressures?
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Old Yesterday, 04:04 PM   #3
ME 109
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I've also found the BT45 rear to flatten off like a wagon wheel.
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Old Yesterday, 07:34 PM   #4
cjbecker OP
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Quote:
Originally Posted by Rucksta View Post
I've run 100/90 with 130/80 although not the brand you asked after.
The result was a less fun bike that required a more aggressive style.

BT45s are a dual compound tyre hard in the middle, soft on the edges and have a reputation for wearing well for the amount of stick on offer.

How are your tyre pressures?
What do you mean less fun but more aggressive? Fall over in turns, or have to man handle it into a turn?

Right now I have been running 26-26 and the tires almost felt bouncy, but they seem to grip better then higher pressure. Before 26-26, I was running 32-34 and rode smoother but offered less grip.

And after further inspection my front tire is cupping pretty bad. That might have something to do with my wobbles.
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Old Yesterday, 07:36 PM   #5
cjbecker OP
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Originally Posted by ME 109 View Post
I've also found the BT45 rear to flatten off like a wagon wheel.
It's bad, I probably have only 2000 miles on them, and it's not like I'm taking it easy in the turns. Im not scraping heads or anything but.
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Old Yesterday, 08:17 PM   #6
Rucksta
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Originally Posted by cjbecker View Post
What do you mean less fun but more aggressive? Fall over in turns, or have to man handle it into a turn?
Greater bump steer, more effort to achieve tip in, greater lean angle required to achieve turn radius, rubber cow effect amplified

Right now I have been running 26-26 and the tires almost felt bouncy, but they seem to grip better then higher pressure. Before 26-26, I was running 32-34 and rode smoother but offered less grip.
I settled for 28/28 or 28/30 as a compromise

And after further inspection my front tire is cupping pretty bad. That might have something to do with my wobbles.
Cupping is usually associated with low pressure and heavy braking - results may vary
I could stretch a BT45 to 5.000 miles but use by date was 3,500 - 4,000.
I think I'm hard on tyres
2,000 seems premature
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Old Today, 05:22 AM   #7
cjbecker OP
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I might have more then 2000 but I really don't think so. I don't have an odometer on my bike, or any gauges.

The tires are 2 years old.

I do get a little aggressive with my braking, but I did not think I was braking that hard, leaning into a turn.
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