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Old August 28th, 2017, 03:09 AM   #81
Twinshock750
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So, as I mentioned a while back, here in NZ our rules have opened up from this month to any readily available (ie imported by the official importer) DOT spec tyre of the correct size....so no mail order specials if the tyre is not available here already.

Supply of SC Pirelli's can be a bit patchy - I have a front SC1, but rears are only SC2 for 140/70 and not in stock currently and I don't want to go to 150/60. I have a new Rosso 11 which was the go to rear tyre for many guys and worked well. I did a few miles on one when I bought my 300, but shifted to the Dunlops for most of the season before trying the RS10's also ( ended up with a pair!).

So, on a back to back basis, how have people found an SC2 Super Corsa rear vs Dr11 rear for grip and feel. Much in it? Just interested to know what people thought . I'll be doing a test day in about 3 weeks with SC1 SC front and a DR11 rear as that's what I'll have to start the season on and probably run for most of it.

We've no Alpha13SP's yet here, and the local Dunlop IMporter is showing one size of Alpha 14 in stock already.....so not sure if we will get the 13SP's locally supplied.
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Old August 28th, 2017, 06:09 AM   #82
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Originally Posted by Twinshock750 View Post
So, as I mentioned a while back, here in NZ our rules have opened up from this month to any readily available (ie imported by the official importer) DOT spec tyre of the correct size....so no mail order specials if the tyre is not available here already.

Supply of SC Pirelli's can be a bit patchy - I have a front SC1, but rears are only SC2 for 140/70 and not in stock currently and I don't want to go to 150/60. I have a new Rosso 11 which was the go to rear tyre for many guys and worked well. I did a few miles on one when I bought my 300, but shifted to the Dunlops for most of the season before trying the RS10's also ( ended up with a pair!).

So, on a back to back basis, how have people found an SC2 Super Corsa rear vs Dr11 rear for grip and feel. Much in it? Just interested to know what people thought . I'll be doing a test day in about 3 weeks with SC1 SC front and a DR11 rear as that's what I'll have to start the season on and probably run for most of it.

We've no Alpha13SP's yet here, and the local Dunlop IMporter is showing one size of Alpha 14 in stock already.....so not sure if we will get the 13SP's locally supplied.
whats your thoughts on the rs10. im currently running the rs 10.
grip seams to be there, their wearing faster than the dr11 that i ran last year.
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Old September 4th, 2017, 04:04 PM   #83
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First day out on the Michelin RS 150 rear for my 300. It felt just as good as the Alphas, but there again new tires always feel great! I'll keep you updated as it wears, right now it's only got about 110 miles on it. Even though it was pretty damn hot out there today, it did not slide or squirm much at all. I'll have to try and push it a little harder next time.
I've put in 3 more track days on the RS150 rear. The first one wasn't so good, but only because my front tire was worn out and I had no feel on the front and could not push. Over the Labor Day weekend I did another 2 days with a fresh front tire. First day the rear seemed to squirm around a bit, but on the second day I bumped up the cold pressure to 28-29 and it really performed nicely. I was deliberately giving some extra gas coming out of the tight corners and it was not moving around at all.

It still seems to be wearing nicely and looks to have plenty of life left in it. If you're not sprint racing and only doing track days and do not need absolute peak performance then I'd highly recommend this tire. Some of our local teams do use this rear for the endurance races though.
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Old September 5th, 2017, 04:49 PM   #84
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I tried new combination these past couple weeks. Two weeks ago at Laguna Seca and last week @ Sears Point/Sonoma.
front: 110/70-17 Dunlop Alpha-13 SP @ 27psi
rear: 150/60-17 Dunlop Alpha-13 regular @ 25psi
I must say that Alpha-13 SP has much softer casing than any tyre before. I was practically able to mount it by hand without any tyre-levers! Well, used levers for last 6" of bead and that was it.

Using sticker front-tyre really helped balance bike's handling given vastly different tyre sizes (stock front with +2 size increase in rear). Front-end still pushed at limit, but did so at higher grip-level and slid more gently and controllable than before with regular A-13.

Still can't get 150 back-end to let go no matter what kind of maneuvers I did. Maybe if I did abnormal stuff like slam on back brakes I can get it to come around. Full-throttle in corners just increased speed and tucked front-end. So there's still mis-match with using 110/150 tyres on N250R, even with stickier front tyre.

Once I go through these Alpha-13s, I may try Bridgestone V02 GP125 90/120 soft/medium combo that fast riders are using. Lower rotational-weight for faster acceleration and even better grip!
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Old September 5th, 2017, 05:07 PM   #85
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Originally Posted by JacRyann View Post
I tried new combination these past couple weeks. Two weeks ago at Laguna Seca and last week @ Sears Point/Sonoma.
front: 110/70-17 Dunlop Alpha-13 SP @ 27psi
rear: 150/60-17 Dunlop Alpha-13 regular @ 25psi
I must say that Alpha-13 SP has much softer casing than any tyre before. I was practically able to mount it by hand without any tyre-levers! Well, used levers for last 6" of bead and that was it.

Using sticker front-tyre really helped balance bike's handling given vastly different tyre sizes (stock front with +2 size increase in rear). Front-end still pushed at limit, but did so at higher grip-level and slid more gently and controllable than before with regular A-13.

Still can't get 150 back-end to let go no matter what kind of maneuvers I did. Maybe if I did abnormal stuff like slam on back brakes I can get it to come around. Full-throttle in corners just increased speed and tucked front-end. So there's still mis-match with using 110/150 tyres on N250R, even with stickier front tyre.

Once I go through these Alpha-13s, I may try Bridgestone V02 GP125 90/120 soft/medium combo that fast riders are using. Lower rotational-weight for faster acceleration and even better grip!
intersting,
ive seen the boys going the oppisite way also and doing really good. bridgestone 250 slicks 120/165
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Old September 6th, 2017, 07:34 AM   #86
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I'm still intrigued by those A13 SP's. Where do you buy them?

Are they still dual compound?

Are they still the type of race tire that will get damaged if you freeze them?

Does Dunlop list anywhere a comparison on the base A13 to the SP?

I think a softer carcass is a good thing, especially on a bike like this with a high unsprung weight.
Probably to late but the SP's are this years tire for the KTM cup bikes, only available to the cup guys through Race Tire Service . I know plenty of guys selling this tears take offs if you need a set or 5. More edge grip is their claim to fame.
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Old September 16th, 2017, 09:10 AM   #87
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Dunlop A13's on sale at Race Tire Service right now. $199 a set.

http://stores.racetireservice.com/AL...ninja-KTM-390/

Maybe they are making room for the SP's or the 14's or just clearing out this year's stock.
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Old October 3rd, 2017, 06:32 AM   #88
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I think they're cheap because the RC cup moved to the q3+.

http://www.motoamerica.com/dunlop-in...for-ktm-rc-cup

IMO i think this is very interesting for people who want to ride street and track as they can use the same tire and still get what the pros are using.

According to dunlop's website the tires for the small displacement bikes should be available in January 2018.

http://www.dunlopmotorcycletires.com...rtmax-q3-line/

Pricing should be interesting as a set of the 120 front and 160 rear are about $270.
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Old October 6th, 2017, 01:34 AM   #89
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Has anyone tried the Michelins on the 250? they are new to us this year, and due to "tire guy silly season" a week before racing, I am open to testing new tires.
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Old October 6th, 2017, 06:20 AM   #90
tgold
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Well, I'll be likely be going a different route next year. I just scored 5 sets of new Moto3/ 125GP-sized Dunlops for free, so it's worth it for me to try them out. The only catch is that they are 5 years old. Shouldn't be a big deal because they were stored properly. The 250 has handled pretty well all year, but I'm dragging the belly pan in some corners so I'll need to get the ride height back to where it is now. I'll measure the change in tire diameter then make new dog bones for the rear and lower the forks in the triples to get the ride height back to where it needs to be.

The one set of A-13 SP MotoAmerica takeoffs I put on the bike this year lasted the entire season. That would be six three hour endurance races plus practice (minus about three or four hours when we used rain tires.) I'd say a total of about 21 hours of on-track use so that's pretty good. The last race I was getting more sliding from the front than I like, so it was time for a new set. The back was worn down to the wear bars, but never really lost grip all season except for going over damp patches and the occasional movement/protesting under heavy braking and downshifting. We won five out of six endurance races with the narrowest margin of victory being four laps, so I'd say our overall pace was pretty good. However, we did not need to push to a sprint race level of pace, so that is a factor to consider.

If the new Q3 tires really are an improvement over the A-13s then they should be a solid choice for our little bikes. Still, my favorite tire so far has been the Pirelli Supercorsa. Without knowing how the Dunlop slicks will perform, the Pirellis are still my first choice for outright performance.
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Old October 28th, 2017, 03:24 AM   #91
Twinshock750
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Okay, thinking about went weather grip. If you can't use proper wets and have to have use a DOT tyre, what gives the best grip....must be stock sizes too!
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