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MC 21-SP Tyres-Experiences


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elz7173

 
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MC 21-SP Tyres-Experiences

Wed May 18, 2005 1:40 pm » Post: #1 » Download Post

Can anyone recommend a new set of tyres for me-currently have Pilots fitted and needing replaced.
Anyone have bad/good experiences with different types or even sizes?
Standard Bike/Road use only though grip has priority over price.
Any advice much appreciated.

If I crash this one I will fit a sidecar to it.......or has that been done already?
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Dave Ett
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Wed May 18, 2005 2:22 pm » Post: #2 » Download Post

I recommend GPR70's in standard sizes. Good enough to get the fairing down both sides...
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Barry_MC21

 
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Wed May 18, 2005 2:54 pm » Post: #3 » Download Post

What make are they Dave?
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Andy
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Wed May 18, 2005 2:57 pm » Post: #4 » Download Post

I'd second that Dave, but go with the GPR70SP's for something a little more sticky still.

Good feedback, good lean angles, good grip, great price!

It's the tyre of choice in the Asia Pacific championships on the small capacity bikes, and those lads are quick!

Currently back running the GPR70's on my MC21SE after several years on Dragons - can't get the nice tread pattern anymore!!! Wink
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Barry_MC21

 
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Wed May 18, 2005 3:08 pm » Post: #5 » Download Post

come on, spill the beans, where can I also get a pair from (or rather just a rear at the mo!)?
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nigel
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Wed May 18, 2005 4:06 pm » Post: #6 » Download Post

i have used bridgestone 090pros on my 250s for tha last year or so and they have been great (road use)
recently needed a set of tyres for the rgv so i tried a pair of gpr 70sp found they made the bike very twitchy and front end nervous(may need a bit suspension adjustment) on the road will see what there like at llandow on the track
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Wed May 18, 2005 4:11 pm » Post: #7 » Download Post

They're a Dunlop, and can be acquired by most places.

Demon Tweeks do them, as do M and P. (www.demon-tweeks.co.uk and www.mandp.co.uk )

£150 a set last time I bought them, and as Andy mentions, the SP are the softer compound.

Look here: http://www.dunloptyres.co.uk/bike/ for details. Click Radial Tyres top left, then click GPR70 at the bottom of the page.
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maxim
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Wed May 18, 2005 5:46 pm » Post: #8 » Download Post

I've just bought a pair of 090 pro's for the road and in my fingernail test opinion Smile the front feels some way softer than the front gpr70sp... I've not had any trouble with the gpr's, I just wanted a change. for the track it's a different story as I go with D208GP's. Now they are like snot... Heard the rennsports work well on 250's too but some of the other stickies have a carcass that's a bit stiff for our bikes to work at their optimum.
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nigel
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Wed May 18, 2005 7:11 pm » Post: #9 » Download Post

whilst at silverstone i see a/r racing had some new dunlop 209gps
only had them in 110/120150/160 looked very similar tread to the gpr may be worth a look for track use

ill see alan at the weekend ill try and find out what the compounds are like
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Wed May 18, 2005 8:01 pm » Post: #10 » Download Post

what about the GPR 80 has nayone tryed them.

i asked my bike shop to get me a GPR 70 SP coz thats what i have and think its a great tyre but they handed me over a GPR80 instead and was wondering what is was going to be like coz its not on yet.

whats the differance between the 70 and 80 besides tread pattern?
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nigel
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Wed May 18, 2005 8:38 pm » Post: #11 » Download Post

the 80s a harder compound higher mileage tyre
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StephenRC45
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Wed May 18, 2005 10:52 pm » Post: #12 » Download Post

My self and Andy only tonight tested the limits of GPR70SP's Im sure he remembers where and when.... i do!
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invigiator

 
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Wed May 18, 2005 10:55 pm » Post: #13 » Download Post

I use the Bridgestone BT090 and BT090 pro ... the 'pro' is just the name for the rear tyre, they are the same.

These are awesome tyres at the track, and are considered a fully-fledged track tyre. In the wet you don't get much lean though because the tread doesn't go far round the profile. So for the street only you might want to consider a different tyre, but if you're after grip in the dry at the cost of longevity then this is the tyre for you.
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Thu May 19, 2005 1:36 am » Post: #14 » Download Post

At the end of the day, you have to choose a tyre and try it! If it doesn't work for you, then you simply gain experience and try something else. It all costs money, but hell, there's nothing you can do about that. I would highly recommend AGAINST fitting mismatched tyres, i.e. use a Dunlop front and rear, or a Michellin front and rear, etc. Also, stick to the stock sizes, especially on the street.

I personally absolutely positively HATE Bridgestones! I think they feel unstable and don't like the feedback at all, but a lot of people like them.

On the other hand I liked my (original style) Pirelli Dragons. Dry grip was superb, and when they slid it was very progressive. A Corsa (v. soft) front and a "normal" rear worked really well for me - not much fun in the wet though, but I don't ride in the wet, that's what I have a car for!! Smile I went to the Dragons because I wasn't able to buy the same GPR70's that the bike was imported with at the time I came to replace them, and I could buy them in the correct speed rating, which is very important on a small capacity bike.

The last NSR (MC21) I rode with Michellin Pilots on felt strange, it did however have an RVF400 front-end with the wider 120 section tyre. It was a strange combination. The front steered slowly but the tyre felt like it was falling over onto its' side when you tipped the bike in as it has quite a "triangular" profile. I didn't like the setup at all.

I've just gone back to GPR70's recently as I can no longer get the Dragons in my preferred style. Different feel again now, but I know I'll get used to them again. As Stephen mentioned earlier, during some quite fast road work (in pretty cold conditions too) we both had the NSR's a bit "squirrely" this evening, but the GPRs kept us right-way-up!
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elz7173

 
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Fri May 20, 2005 4:54 pm » Post: #15 » Download Post

Thanks a lot for all your comments and advice.
Think I will try the Dunlops.
My local supplier has quoted £149 for a set,(Bridgestones were £137).
If anyone knows anywhere much cheaper please let me know.
Cheers all
Craig
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