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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through May 28, 2010 » Pilot road 2, good tire to run on the back? « Previous Next »

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Dktechguy112
Posted on Saturday, May 22, 2010 - 04:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I bought a pilot road 2 rear tire, i planned to run it with the stock pirelli corsa III up front. Is that a good combo? I dropped my bike off at the dealer and gave them the tire and the service guy said he doesn't recommend running different compounds. He said it will cause a lot of handling problems.

What do you guys think? I am going to commute on the bike, so i need a tire that will last a while, but i also want decent cornering grip.

The other tire i looked at is the pirelli angel ST, but i already bought the pilot road 2, so i want to run the pr2 unless you guys think it will cause handling problems.
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Socoken
Posted on Saturday, May 22, 2010 - 04:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

There are a few things that change the way a tire feels

-Belting: The way the belts are oriented and how strong they are determines how a tire flexes and grips when cornering or braking.

-Tread pattern: Tread patterns also weigh in on how a tire grips in corners. Some have more grooves, some less. More grooves lead to a tire that runs cooler/ grips less.

-Tire compound: Softer or harder rubber determines optimal running temp and grip when hot/cold.

-Tire profile: Not all tires have the same curvature/radius. Some, like the Q2, have a sharper curve to it for a larger footprint while leaned over, some are flatter.

When cornering, your bike is straining against a very small footprint front and rear, and they need to be on the same page. If not, they will be fighting against each other, or the bike will exploit the shortcomings of one tire vs the other. Tire companies love to show off new technology, so the similarities from one company to another are few, let alone a supersport tire vs. a touring tire.
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Dktechguy112
Posted on Saturday, May 22, 2010 - 05:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

so you are saying that i should not run the pilot road 2 with the stock front? I thought I saw a few people on here that ran the stock front with the pilot road 2 on the back.

what about the prielli angel ST with the stock front? It seems to be in between sport and touring
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Kidder
Posted on Saturday, May 22, 2010 - 05:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm running the exact combo and it works just fine.

The PR2 is a SPORT-touring tire. It is a dual-compound tire that is harder in the middle for more mileage and softer on the sides for improved cornering.

On my GSXR1000 I had a Pilot Power on the front and Pilot Road on the rear. It was an excellent combo that performed very well.

People that say don't mix tires are usually those that have never done it.

Just make sure that you have the stickier tire up front and you'll be fine.
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Socoken
Posted on Saturday, May 22, 2010 - 05:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It surely wont make the bike handle better, I guess it depends on your riding style.
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Dktechguy112
Posted on Saturday, May 22, 2010 - 05:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks kidder,
that's what i was looking for. I'm not going to be dragging my knee just yet. I am coming from a sportster 883 with 38 hp, so the 1125 is a big step up for me. I just want be able to lean a bit in the corners, and be able to romp on it on the straights, and i think the pr2 will be able to do that. I guess we will find out in about a week.
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Badlionsfan
Posted on Saturday, May 22, 2010 - 05:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

For me, it's just not worth it to mix and match. Many places have package deals when you get the pair. I like to think that the tire engineers are much smarter than me when it comes to matching up front and rear compounds.

Btw, i've got about 300 miles on my power pures and I really like how they feel so far.
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Kidder
Posted on Saturday, May 22, 2010 - 06:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dktech,

If you wanted to drag a knee, you still could with the PR2. They're not race tires but they're still damn good.

And Socoken, no, I'm sure the PR2 won't handle BETTER. But, 90% of those out there won't notice the difference. Are you riding your C3s to the limit? If so, then maybe a PR2 wouldn't be for you. I'd challenge you to ride a PR2 to the limit. Trust me, tires are usually a hell of a lot better than we are.
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Dktechguy112
Posted on Saturday, May 22, 2010 - 06:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

kidder,
I have seen a few posts on here of people that run the pr2 with a power pilot 2ct in the front. I noticed that you said you had that on your gsxr, but have you tried it on the 1125? If so, which do you like better? The pilot power 2ct on the front with a pr2 on the rear, or the the stock pirelli on the front with a pr2 on the rear?

also, have you tried the pirelli angel st's? what do you think of them compared to the pr2?

(Message edited by dktechguy112 on May 22, 2010)
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Father_of_an_era
Posted on Saturday, May 22, 2010 - 07:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have the stock Perreli up front but I am rolling Dunlop Q2 in the rear. It works really well for me. Just came back from the Ortegas and the bike cornered very well all the way up and down at fairly high speeds (though, not too crazy).
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Kidder
Posted on Saturday, May 22, 2010 - 09:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dktech,

I only have 2000 miles on my 1125. I had to replace the rear because it took a nasty staple that ruined the tire. So, I replaced it with a PR2. From the days of endurance racing to now, I have always like Michelins.

When the C3 is done, I will replace it with a Michelin Power 2CT or Road 2. I'm not interested in the Angels just because I prefer Michelins. When I replace the front C3, I will definitely do a review on how the Power or Road changed the handling of the bike. I know on my GSXR, which came with Bridgestones, it transformed the handling when I put a Power on the front. I'm hoping for similar results on the 1125.
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Mountainstorm
Posted on Sunday, May 23, 2010 - 11:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've got a Power on the front and a Road on the back right now. I think the Road is too flat a profile to work optimally with the Power 2CT, but it sure does last for highway riding. Though not optimal I don't push hard enough to make that a hazard.
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Duphuckincati
Posted on Sunday, May 23, 2010 - 12:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Round, black, radial, name brand, holds air, tread, fergeddaboudit and ride.
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Norwegian_1125cr
Posted on Monday, May 24, 2010 - 04:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think I will go for Pirelli Angel when my tires need replacing. In a test from last year the Pirelli Diablo Strada won over Michelin PR 2CT, Metzeler Z6, BT21+++
According to this review the angels perform even better than the Strada:

http://www.motorcycle.com/products/pirelli-angel-s t-tire-review-88755.html
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Thefleshrocket
Posted on Monday, May 24, 2010 - 03:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The pr2 has a relatively flat profile. It will result in good mileage for upright riding but the profile will probably make the bike feel like it wants to fall into turns and the contact patch when leaned over will be a fair bit smaller than with a pointier tire. Ie you'll want to be more careful with the throttle when cornering aggressively.

For what it's worth, I always run the same tire fron and rear. many people mix and match with no reported problems, but given how I ride, I prefer to not take that risk.
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Kidder
Posted on Monday, May 24, 2010 - 08:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thefleshrocket,

Wouldn't a pointier profile make the tire turn in quicker? Yes, it would. And, if you can tell the difference on the street, you are good. Now, if we were talking front tires, I'd be more inclined to agree with you.

Duphuckincati pretty much summed it up. Similar compounds, sizes...ride the damn thing.
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Tpoppa
Posted on Monday, May 24, 2010 - 08:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On the STREET, wet performance is the major concern about mixing tires. Take the Metz Z6, the rear has no tread in the center, it relies on the front tread to clear a channel through moisture.

I change my fronts when then are ready, not when I change the rear. I have run several mixed combos. I have never had an issue even during aggressive cornering.
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Socoken
Posted on Monday, May 24, 2010 - 09:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If it doesnt help handling, and its a different setup, it can only hurt handling, agreed?

Sure, not everyone rides hard enough on the street to notice a difference, but its there.

Very few utilize all 146hp on the street either, but would any of us change our oil to one that cost 10hp if it lasted a little longer? Im guessing no.
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Kidder
Posted on Tuesday, May 25, 2010 - 08:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If it doesn't hurt handling, and its a different setup...

It's apparent, most of you drink the kool-aid by the manufacturers and don't mix brands. Fine.

But, I'm telling you tires are so good these days, that a lot of the assumptions stated here are outdated. And, they are assumptions because those stating it's going to make things handle adversely haven't tried a different setup.

So, for the record, I'm currently running a C3 up front and PR 2 in the rear. The PR2 is as good as the C3 (for my intended use - commuting and riding twisties) and will last a helluva lot longer.

And, I guess I'm an idiot because I'm running a less "expensive" Shell Rotella T oil that is a full synthetic. Nah...there's been scientific studies stating that the phosphorus in the oil is better for wet clutches.
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Thefleshrocket
Posted on Tuesday, May 25, 2010 - 03:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Kidder, a pointier profile will make for quicker turn in, but a flatter profile will make for a bike that doesn't turn very well until it gets to the curved part of the tire and then the bike will feel like it wants to fall in. Don't confuse quicker turn in (which is a neutral, linear-feeling) with falling in (which is a somewhat abrupt change in lean angle).

And absolutely I notice the difference. The Pilot Power 2CT (and presumably the regular PP) makes my bikes handle much more "lightly". Less effort is required on the inside clipon to initiate a turn and less pressure is required on the clipon to hold a line mid-corner.

You honestly might not be able to tell the difference, perhaps either due to your riding style or skill level. There's certainly nothing wrong with that--if you are happy with how the PR2 works on your bike, I'm glad to hear it.

(Message edited by thefleshrocket on May 25, 2010)
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Kidder
Posted on Tuesday, May 25, 2010 - 08:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

TFR,

I wanted to make sure what you were saying. Thanks for the explanation.

I can't wait to put a Pilot Power 2CT on the front once the C3 is shagged. If I have similar results as on my Gixxer, I'll be a happy camper.
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Ridenusa4l
Posted on Tuesday, May 25, 2010 - 11:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have PR2's on my 1125 and LOVE them...i notice NO difference in handling from stock and my tires have no chicken strips, i've scrapped the pegs with both and the only thing i know is that i got 3k mi. out of the corsa 3's and 10k mi. out of my PR2 rear and still going on the front.

I am NOT easy on my tires at all, i do the occasional wheelie, and tend to see triple digits on a regular basis, and LOVE the twisties! (no im not trying to "brag" im just being honest about my riding habits)

ill probably never use anything else, i love em!!

Jake
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Dktechguy112
Posted on Wednesday, May 26, 2010 - 02:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks for the advice, i am going to have the pr2 mounted up and see how i like it.
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