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Old 04-26-2009, 06:23 PM   #1
Jerran V
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Review-Dunlop 209 GP-A (AMA Spec tire)

Great tire up to a point. For the mid-advanced and slower, these offer enough front feedback and solid drive out of corners at good lean-angle with the occasional very predictable spin-up. I would recommend these all day for that with no hesitation.

For the expert racer or really quick advanced rider...get something else. At the limit of braking, the front has very little feel. Rather then flex and move around a little, they just give out. I'm pretty good on the brakes and with few exceptions close in and pass under braking. Additionally, I have pretty good feel and as such run consistant lap times (most sessions every lap is within 0.5-1.0sec). These tires slowed me down. They lacked the front-end feel that I'm used to. On a positive note...They did however, make my laps more interesting by offering unrelenting tank slappers on EVERY straight. I look forward to using these up and trying something else.
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Old 04-26-2009, 07:06 PM   #2
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AHHHH the Dunplop head shake. He's not kidding on the lack of front feel, watched him save two other front end slides (well done!!) and then lost the front as I was trying to get inside him for the pass, and we were really not running at race pace even, but still quite spirited. And yes they did slow him down...............considerably from what I usually expect trying to run him down.
Michelin for the win...................Good running with you today Jerran, sorry I didn't get that one on video. Looking forward to the next time already.
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Old 04-26-2009, 07:48 PM   #3
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what were you on before the Dunlops?
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Old 04-26-2009, 08:29 PM   #4
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i have ridden on those tires before and have the same review pretty much. the tank slapper issue is caused by a bad suspension setup (geometry wise) for the tire.

as for the feel of the tire.....they were numb to me as well, offering VERY little to NO feel at all. which is why i like the Pirelli's. the pirelli's to me offer great feedback. they soak up all the little bumps better, yet you can still feel the road.

you oughta try out the pirelli diablo supercorsa's next....you just might be hooked.
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Old 04-26-2009, 10:48 PM   #5
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i have ridden on those tires before and have the same review pretty much. the tank slapper issue is caused by a bad suspension setup (geometry wise) for the tire.

as for the feel of the tire.....they were numb to me as well, offering VERY little to NO feel at all. which is why i like the Pirelli's. the pirelli's to me offer great feedback. they soak up all the little bumps better, yet you can still feel the road.

you oughta try out the pirelli diablo supercorsa's next....you just might be hooked.
I assume the geometry is too steep and you have to raise the front to compensate for the Dunlops?
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Old 04-27-2009, 08:07 AM   #6
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I agree with everyone else's opinion on the GP-A's. At TWS (Texas World Speedway) I was able to go faster on an old set of 211 take-offs in practice than I did in the races on brand new GP-A"s. They just seem very vague while trying to brake heavily under lean angle... also the rear doesn't offer near the mid-corner or exit grip of even a used 211. Incredible tire for someone running down into the 43-44+ range at MSRH, but the really fast guys I know aren't even able to go more than a handful of seconds faster than that on them. If you really want to have the ability to throw down fast laps, you need to be on the 211's. Period.
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Old 04-27-2009, 11:05 AM   #7
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jerran, u r fast for a trackday rider, but youre not a racer and dont have the skills to put a tire to its limits. braking is your weakest area, so how r you going to rate any tire?
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Old 04-27-2009, 01:16 PM   #8
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jerran, u r fast for a trackday rider, but youre not a racer and dont have the skills to put a tire to its limits. braking is your weakest area, so how r you going to rate any tire?
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Old 04-27-2009, 03:14 PM   #9
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lol... Todd was correct, when you switched from the Stones to the Lops did you change your geometry setup? At the very least you should have lowered your rear ride height to compensate for the Dunlops taller rear tire.
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Old 04-27-2009, 05:05 PM   #10
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Just FYI,
The Bridgestone front is 600mm overall dia
The Dunlop front is 605mm overall dia
Thats a adjustment of 2.5mm

The Bridgestone 190/55 rear is 652mm overall dia
The Dunlop GPA 190/55 rear is 643mm overall dia
Thats a adjustment of 4.5mm

The dunlop rear is very short and flat. That is why it steers like poo. That is also why it has so much contact patch on the rear. That excessive contact patch tends to push the front, thus making it chatter or skip along. That is what Jerran is feeling, is the lack of confident feel from the front end or that is what I am gathering from his comments.
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Old 04-27-2009, 05:09 PM   #11
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^ this man knows his tires
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Old 04-27-2009, 05:34 PM   #12
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maybe he should take his dress off when he's on the track
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Old 04-27-2009, 06:18 PM   #13
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Hence those extended fork caps. That even the non Dubplop riders are thinkin they need nowadays.
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Old 04-27-2009, 07:29 PM   #14
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First of all Allen (Mr. Whoopie)...Don't be mad just because I turned down your homosexual advances towards me. I'm sure you'll find that "special man" one day soon. I hear that Dustin is a good kisser...give him a call

I raised the front 6mm...Larry suggested more. I haven't lowered the rear though (don't get excited Allen, I'm talking about my bike) but I'll give it a shot. Hopefully that will improve feel.

I appreciate all of the input and suggestions.
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Old 04-27-2009, 08:57 PM   #15
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i already had dustin
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Old 04-27-2009, 09:11 PM   #16
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Two times.
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Old 04-27-2009, 10:50 PM   #17
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Old 04-28-2009, 01:15 AM   #18
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Great tire up to a point. For the mid-advanced and slower, these offer enough front feedback and solid drive out of corners at good lean-angle with the occasional very predictable spin-up. I would recommend these all day for that with no hesitation.

For the expert racer or really quick advanced rider...get something else. At the limit of braking, the front has very little feel. Rather then flex and move around a little, they just give out. I'm pretty good on the brakes and with few exceptions close in and pass under braking. Additionally, I have pretty good feel and as such run consistant lap times (most sessions every lap is within 0.5-1.0sec). These tires slowed me down. They lacked the front-end feel that I'm used to. On a positive note...They did however, make my laps more interesting by offering unrelenting tank slappers on EVERY straight. I look forward to using these up and trying something else.
What kind of times is quick advance rider at what track? Ty Howard was running on these before right?
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Old 04-28-2009, 03:31 AM   #19
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Low 40s and yeah. Every review for the most part that I've read has had the same issues: wobbles and tucks....

Note to self... learn how to crash lol...

Glad you're okay, J
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Old 04-28-2009, 04:33 AM   #20
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Ty has been running the 209's all year, he doesn't seem to be having any problems with feedback. You can go look at his results if you don't already know

The 209's gave me some issues when switching from the 211's, but a couple of suspension tweaks have them mostly sorted out after one day of experimentation. There is a noticeable difference between the 209's and 211's (the 211's being better), but I think for the price difference (~$100 a set) it's worth running on the 209's.
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