Dunlop Roadsmart

[Viney]

Hmmm, this has been interesting reading guys n gurls, ta!

After some issues with Contis, im always a bit sceptical about changing brands, but i think im going to go for these. I would have had 020's, Road attacks & Z6/Diablo Stradas omn the sv up until now.

[SoulKiss]

Originally Posted by Viney

Hmmm, this has been interesting reading guys n gurls, ta!

After some issues with Contis, im always a bit sceptical about changing brands, but i think im going to go for these. I would have had 020's, Road attacks & Z6/Diablo Stradas omn the sv up until now.

Well I slung them on the Z750 on Thursday - still scrubbing in and only commuted on them so far, but quite happy with them so far.

Of the PR2's, Storm ST's and now the Roadsmarts, they are all good - maybe the Roadsmarts have still something to show me, but at the moment I would say if anyone is looking for Sport/Touring tyres - pick the one you like the tread pattern of from these three

Originally Posted by RingDing

Yes there is. It is most likely linked to air density, I haven't researched it. My riding patterns are fairly constant as most of my riding is my commute (unfortunately!). Besides, it makes no difference whether the average monthly temperature is 12°C or 16°C to my riding style. It is whether it is wet or not that counts. However, if you consider this summer you can see that the mpg still went up despite the wet weather so although I'm sure there is an effect I think, given the other errors in measurement, it is minimal.

I'm not claiming this is particularly scientific, for instance there might only be one or two sample points in some months (tanks of fuel) or a tank middle straddle the boundary to another month. However, considering these errors there is a high correlation between the average monthly temp and mpg (~93%).

I think I have an explanation for this. The fuel sold in the winter is different from that sold in the summer. Winter fuel is more volatile (at a specific temperature) so it vapourises and burns better in colder temperatures. Summer fuel is less volatile (at a specific temperature) so burns better in higher summer temperatures.

I know this because I've just researched it having had a pedantic Bimpota refuse to start after working on it. It was still full of summer fuel. 5 litres of winter fuel in it and it started first time.

This could well be why you are seeing the differences in the milages above.

C

[RingDing]

Berlin,

I'm sure it has an effect, but the transition seems to smooth to be put down to just a change in fuel type. I'd expect a clearer step between mpg levels. Probably too complicated for a layman like me anyway!

[RingDing]

Latest wear measurements.

Is the roadsmart a triple compound tyre?

Originally Posted by RingDing

Berlin,

I'm sure it has an effect, but the transition seems to smooth to be put down to just a change in fuel type. I'd expect a clearer step between mpg levels. Probably too complicated for a layman like me anyway!

You've only got 4 samples in the middle there, looks *alot* like two different types of fuel to me. Some nonsense about petrol volatility requirements in the EU.

[jambo]

Originally Posted by svdemon

Is the roadsmart a triple compound tyre?

My understanding is thus:
Looking at the tyre, it goes: Soft on LHS, harder in centre, soft on the RHS.

To anyone else this is a "duel compound tyre" with one compound for the centre, and one for the edges. In a stunning display of one-one-upmanship that any 12 year old would be proud of, Dunlop have claimed three bands (soft, harder, soft) therefore tripple compound.

Still getting good reviews though

From their website:
http://www.dunlopmotorcycle.com/tire...ire.asp?id=101

"MT Multi-Tread rear tire incorporates a long-wearing compound in the center of the tire tread and a lateral-grip compound on each shoulder to maximize cornering performance and provide class-leading grip and feel."


Jambo

Originally Posted by jambo

My understanding is thus:
Looking at the tyre, it goes: Soft on LHS, harder in centre, soft on the RHS.

To anyone else this is a "duel compound tyre" with one compound for the centre, and one for the edges. In a stunning display of one-one-upmanship that any 12 year old would be proud of, Dunlop have claimed three bands (soft, harder, soft) therefore tripple compound.

Still getting good reviews though

From their website:
http://www.dunlopmotorcycle.com/tire...ire.asp?id=101

"MT Multi-Tread rear tire incorporates a long-wearing compound in the center of the tire tread and a lateral-grip compound on each shoulder to maximize cornering performance and provide class-leading grip and feel."


Jambo

Cheeky!!!

They are proving to be very nice tires anyway, i will be keeping an eye on mileage also. Seem to be as good as if not better than the BT021's they replaced.

[punyXpress]

Nearly there, Berlin.
It is temperature - related, but nowt to do with the fuel.
When it gets REALLY cold, donning the Stormgard & waders adds massively to wind resistance - hence the dud mpg !