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Offline ThunderGuts

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New tyres
on: April 07, 2021, 08:05:31 AM
So, getting some cupping on my front tyre and slightly squared rear (4k miles on Scorpion Trail 2s); this is on a 2019 CR. My two questions please are;

1) Is "cupping" normal or indicative of something not quite right, e.g. suspension settings? I always keep my tyre pressures bang on the 36/42 recommended in the book.

2) What are the current favourites for the bike? I'm thinking Michelin Pilot Road 4 SE as I've heard good things about the PR4?

My typical riding is weekend fun 80% of the time, plus the odd short tour. I avoid motorways and straight roads wherever possible and I'm fortunate that I don't need to commute on it so can choose the roads I ride.

Cheers.

Offline Corringdon

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Re: New tyres
Reply #1 on: April 07, 2021, 09:04:58 AM
Choice of tyres is a very subjective thing and, as member Skids has mentioned many times in past threads, it depends a lot on what you intend to use the bike for.
Cupping on the front tyre is not normally indicative of a fault in the bike but how the tyre reacts to certain input. For instance Road 5’s are renowned for cupping badly on certain machines.
The OEM tyres fitted to new bikes may bear the same name as a tyre bought over the counter but to keep costs down for the manufacturer of the bike the tyres are of a slightly inferior quality than the shop bought item.
You say you use the bike mainly for weekend fun in which case any good sports/touring tyre from a reputable manufacturer should suffice. Some manufacturers like Bridgestone and Dunlop even recommend a sports style tyre like the S22 or the Sportsmart 3 for the Crossrunner.
As with all things the choice is with the rider and what suits one will not necessarily suit the other.
Some of my past bikes. Norton ES2 - Norton 650SS - Velocette Venom - Velocette Thruxton Venom - Kawasaki ST 1100 - Kawasaki GPZ 1100 - Honda NSS.

Offline Lars

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Re: New tyres
Reply #2 on: April 07, 2021, 09:15:05 AM
Hello,

I honestly am not sure what cupping is and had to google it. I have never seen that on a motorcycle before but looking at the google results it comes from a bouncing tyre.
If its your front tyre then I would assume there is not enough weight pushing on that tyre, be it because of the suspension being set too hard in the front or maybe the rear suspension is not set up correctly ( not enough pre-load ? maybe too soft ? ) or the weight is not distributed properly. No - I am not calling you fat- I just remember having such an effect years ago on my CBF600 when I rode around with an misadjusted rear suspension and - and that was the culprit- a hopelessly overloaded topbox.

My personal tyre favourite is and has been the Michelin Road 5 for the last 4 sets of tyres. it makes the bike handle like a bicycle and lasts long enough for my standards. turns out my riding style is fairly aggressive it still lasts around 6000 km when going on local fun tours and 9000 km on relaxed long tours. I know tyres last differently for everyone just to put it in perspective.

Lars 

Offline voodoo

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Re: New tyres
Reply #3 on: April 07, 2021, 10:22:42 AM
The road5 lasted about 16.000km on my CR, I must drive like a slug.....
But albeight it being a good tire I prefer the Pirelli Angel GT.

Most of all I think the big brands don't make bad tires, so whatever you choose it will be good enough for weekendfun.
Stop making sense

Offline Skids

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Re: New tyres
Reply #4 on: April 07, 2021, 11:54:55 AM
Never experienced cupping so can't help you there I'm afraid.

As has been said, depending upon your riding style and preferences plus the type of rides you do, you wont go wrong with any of the major makes but in particular PR5, Angel GT and my favourite, the Metzeller Roadtec 1, of which I'm on my 5th or 6th set. Excellent dry & wet grip, even on overbanding, good stability under braking, turn nicely and last a good 8k miles+. Very confidence-inspiring tyre.

YMMV.
98 VFR800 - 130,000 miles (sold)
08 VFR800 - 76,000 miles (sold)
14 VFR1200 - 20,000 miles
15 VFR800X - 44,000 miles (sold)
18 VFR800X - 9,000 miles

Offline ThunderGuts

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Re: New tyres
Reply #5 on: April 07, 2021, 04:55:46 PM
Cheers all. Ordered some Michelin Road 5s - it was between them at the Roadtec 01 SE; with the free fitting deal from Michelin they were actually cheaper so went with them this time around.

Looking forwards to jettisoning the ST2s!

 



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