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Old 14.04.2015, 15:59
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Motorcycle tires

To the experienced riders out there. My ER-6 needs a rear tire as the current one is toast

The front still has lots of life in it and it was made end of 2012 (DOT 4812 or 5012, can't remember exactly).

My questions are the following:

Can I get just the rear changed? The front is not THAT old, but when I got the bike it was sitting in a garage all winter and the tires were about half the proper pressure so I'm worried that they may have some deformation in them. Rubber seems fine and there's lots of tread depth.

The tires are Michelin Pilot Power 3, which I think is the sportiest tire in the range bar the more track-oriented Power SuperSport.

I'm thinking either just change the rear with a new Michelin or change the whole set.

If I'm to change the whole set I think I'd like to try the Pirelli Diablo Rosso II, a friend on an S2R is telling me he likes them a lot, and I've read quite nice things about them here and there. Anyone with any experience? His words are: "I really like them, but I don't know if it's the tarmac or the tire" - his extensive motorbiking experience was in Greece which was an ice-skating ring in comparison...


Also I'm spending my time on the bike about 50% commuting and 50% "spirited riding" in weekend trips. Is the tire choice correct, or should I go to something more of a sport-touring to get more miles out of them?




Last question (promise):
Does anyone in the broader ZH area (let's say 50Km radius) has a static balancing machine and (I'm reaching here) a bead breaker? I really love working on my stuff and I'm not a fan of paying 50CHF/tire change for a 20 minute job...

Thanks
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Old 14.04.2015, 16:19
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Re: Motorcycle tires

Firstly, if the front is OK on wear and not deformed, keep it.

I'd go sports tourer to get more out of the tyre. You'll commute on the centre and use the rest when you're being sporty. The bike isn't so heavy or powerful so it should last well.

They're 160/60 ZR17 rears, right? I like Metzeler and will either go for them or PR4s when mine needs them. I'm on Corsas now I think....OEM. Relatively happy and it's a minor miracle (or riding in winter) that the rear has managed 2000km
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Old 14.04.2015, 16:27
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Re: Motorcycle tires

I often use a touring on the back, and a sport on the front, for example a Michelin Pilot Pure on the front, and a PR2 on the rear.

I get maybe 5k with the PR2, versus 3k with a Pure on the rear.

Tom
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Old 14.04.2015, 16:28
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Re: Motorcycle tires

- You can freely mix brands.
- Speedindex on front and back must match.
- For mixing cross/bias-ply with radial ply you have to check the TARGA-Tyre datasheet of your bike (can be get from a tyre dealer).
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Old 14.04.2015, 16:37
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Re: Motorcycle tires

I'd like to keep the same model front and back. If it was a car, I would have no qualms mixing and matching, but I'm not very confident on setting up the bike like that yet. If it's like this I'd go with the same PP3 in the rear and in the next change try something different.

Maybe some back-to-back rides between the ER and my friend's S2R will tell me more.

I'm also thinking of the bike of more of a toy, so I think I'd better stick with the sportier tire.

Speaking of speed index, the previous guy thought it was OK to have a W rated tire on a bike that won't go over 215 or so...

Rear spring pre-tension was way too light (woman rider probably?), tire pressure way off. I would say that they tried track time or something, but a) the size of the chicken strips makes it hard to believe and b) lower pressures on the track are for more dedicated tire so wtf?

They also have very aggressive sintered Tokico brake pads. Zero bite when they're cold and they squeak like hell...

I'm a little perplexed by the previous owner's choices to say the least
The bike doesn't show signs of hard riding, judging from the tires at least, but tire model choice, suspension settings, pads show he was willing
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Old 14.04.2015, 16:53
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Re: Motorcycle tires

I run lower pressures (10-20% or so) in the colder months, or if I plan to do some passes, higher if I plan to do some highway.

Tom
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Old 14.04.2015, 16:56
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Re: Motorcycle tires

After 3 years I tend to consider a tyre old. Front tyre is even more delicate in this regard, since you can handle a little sliding on the back but definitely no loosing grip on the front!

So I'd change both and go for the Diablo Rosso II. Having used Diablo Rosso and then moved to Diablo Rosso II I can only recommend them. You can squeeze 5k Km from them for sure unless you regularly go racing in tracks. Tyre pressure depends but I normally set them to 2.8 rear and 2.9 front. I'm 76 kg more or less and feel a little more pressure helps with cornering, but in the end it's personal taste. If previous owner went on race track you'd definitely see it so most likely not.

My 2 cents.
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Old 14.04.2015, 16:58
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Re: Motorcycle tires

Nowadays manufacturers match the front with the back tire tread design for optimal water displacement.

If you only ride in dry-weather it won't be a problem, however if you are an all-seasons rider perhaps you should stay on the same brand and within not-so-distant "categories". In my (sold ) Aprilia I also ran a sports tire on the front and a touring on the back, with good results.
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Old 14.04.2015, 17:04
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Re: Motorcycle tires

For minimum speedindex see once again the TARGA-tyre datasheet.
I do not know how accurate this database is, but it looks there my be a ER-6 which needs W tyres. Use the type approval number from Field 24 in the gray card to look up the exact specs.

Tyre pressure? They sold the bike, so did not use it, no wonder it was too low.
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Old 14.04.2015, 17:05
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Re: Motorcycle tires

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Tyre pressure depends but I normally set them to 2.8 rear and 2.9 front.
And I usually go 2.1 front, 2.3 rear, 120/180 sizes (and I'm 90kg).

My sidecar tires get 1.4-1.6 front, 1.6-1.8 rear.

Tom
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Old 14.04.2015, 17:07
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Re: Motorcycle tires

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And I usually go 2.1 front, 2.3 rear
I also happened to set tyre pressures more or less like this... on tracks!
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Old 14.04.2015, 17:24
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Re: Motorcycle tires

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I also happened to set tyre pressures more or less like this... on tracks!
You clearly aren't familiar with the roads around here.

Tom
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Old 14.04.2015, 18:41
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Re: Motorcycle tires

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You clearly aren't familiar with the roads around here.

Tom
[OT]
Possible. OR we have different bikes... also possible and much more likely based on absence of sidecar on mine

However I'm only 0.1 higher than recommended pressure in the user manual so I would not feel safe driving on 2.1 tyres regardless of roads and surroundings.
[/OT]

Definitely change the front tyre too, 150 / 200 CHF is not worth the risk IMHO, especially if you plan to having some fun driving.
Even if there are no faults caused by the long stay in garage (unlikely since you say if was down with pressure) rubber tends to get harder with time and you won't have optimal grip even if the tread itself seems almost new.
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Old 14.04.2015, 18:52
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Re: Motorcycle tires

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[OT]
Possible. OR we have different bikes... also possible and much more likely based on absence of sidecar on mine

However I'm only 0.1 higher than recommended pressure in the user manual so I would not feel safe driving on 2.1 tyres regardless of roads and surroundings.
[/OT]
2.1 is only 0.1 lower then recommended (and is actually still within the recommended range).

Just checked, it's a 2CT on the front of the ST2 (and a PR2 rear), Pures on the SS, and Diablo Rosso Corsa on the 999R, all at 2.1/2.3.

One of the LeMans has Avon AM26 (bias) at 2.0/2.1, and the other (with the sidecar) uses car tires, 155/70-R13 at 1.6/1.7/1.8.

Tom
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Old 14.04.2015, 21:09
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Re: Motorcycle tires

Thanks for all the info guys, you're awesome


After work today I passed by a really awesome garage (small one), and asked about prices; 35CHF for the rear tire.

I think I'm going to take it to him more because he seemed like a guy I'd like to have a beer with and his space was really nice. One thing that baffled me is that he told me that the rear tire doesn't need balancing due to the sprocket, chain etc... Which doesn't make sense, and my rear rim has weights on it already. Should I avoid? He did have a racing Duc he was working on when I popped by Really awesome one at that too
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Old 14.04.2015, 21:32
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Re: Motorcycle tires

CHF 350.- for the rear tyre?
On 20 August 2014 I paid CHF 183.75 for a Michelin Pilot Road 3, 180/55 ZR 17

That's for the tyre, the work and balancing. I took off the wheel myself and brought it to the shop, Helfenstein in 8413 Neftenbach.

a fan of paying 50CHF/tire change for a 20 minute job... --> your haircut is probably more expensive and does not help prolong your life.
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Old 14.04.2015, 21:34
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Re: Motorcycle tires

In 29 years of riding bikes in CH, only ONCE has one of my wheels come up as requiring no weights (and the past 25 mostly with the same tire dudes).

On the other hand, my 13" wheels on my sidecar bike (other than the wheel on the sidecar itself) don't fit any machine, so have never been balanced, with no problems.

Tom
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Old 14.04.2015, 23:28
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Re: Motorcycle tires

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CHF 350.- for the rear tyre?
On 20 August 2014 I paid CHF 183.75 for a Michelin Pilot Road 3, 180/55 ZR 17

That's for the tyre, the work and balancing. I took off the wheel myself and brought it to the shop, Helfenstein in 8413 Neftenbach.

a fan of paying 50CHF/tire change for a 20 minute job... --> your haircut is probably more expensive and does not help prolong your life.
35 for the change, the tire is more on the 130 mark. My haircuts are mostly free and I've done lots of critical work on bikes & cars. As always space & tooling (or lack thereof) can be a female dog in this great country

I'm reading about less than 5k Km from the Pilot Powers, and a lot of reports in forums etc about more than 7k or even 8k Km from the Pirellis. In my ~1500Km the Michelins also went pretty quick. I remember they had some life in them, and 3 tanks-worth of spirited driving + commuting with limited lively driving; gotta love the 2cyl torque and the excitement of a noob resulting in silly accelerations everywhere

I think I'm going to get a full set of the Diablo Rosso II for about 280CHF fitted and go to town

Again thanks for the inputs everyone.

For weekend of late afternoon/early evening rides hit me with a PM
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Old 15.04.2015, 12:39
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Re: Motorcycle tires

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Thanks for all the info guys, you're awesome

After work today I passed by a really awesome garage (small one), and asked about prices; 35CHF for the rear tire.
Cahenzli? Sound like him. http://www.cahenzlimotos.ch

Vlada on the other hand does balanicing. www.motorradpneuhaus.ch

PS: Just learnd, the colored dot on the new tire marks the spot where the tire is the lighest it goes where the valve is.

PPS: Just noted that the balancing weight on the rear came of. Did not feel any difference.
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Old 15.04.2015, 13:26
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Re: Motorcycle tires

Actually this guy:
http://www.us-japanmotorcycles.ch/
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