Tyres choice for wide rimmed triples

C

Clumber981

Full member
Looking at some new rubber for mine .  I have CMA 4 inch rear 2.75 front (yeah I know they aren't light but until I can afford some Dymags they are the 3 spoke of choice!)
Looking at 110/80 front and 150/70 rear (running 530 chain)

Seen Avon storm ST and Bridgestones (Bt45 or BT012S) suggested.  What are the latest thoughts from folks out there?

PS Noticed that Conti Have just released some new sizes in their "Road attack 2" range badged as 'Classic Racer'
ie
150/65 R19 69H (surprised this isn't V rated?)
130/80 R18 66V

There's an article on them in Mottorad magazine I was leafing through last week,  but my German doesn't stretch to translations. The photos showed them fitted to a race GS1000 Suzi.

Ralph
 
Hi Ralph,

I heard only good feedback from the Conti Road Attack 2 (CR) over the weekend at Bikers Classics in SPA. our direct neighbor bought them there for his Rau Kawa and was very pleased with them. I can't tell first hand though except that they do look very good on the bike and even when cold and you just put your hand on them, they were sticky like a post-it...  ;)

no feedback on how they work in cold or rain, but on the track, the feedback was very positive.
 
Hi Ralph

I have CMAs too and I ve been very happy with Conti Go"s no issues ,I need tubes with them as the CMAs don t keep the tubeless up otherwise.Be interested in their new range.

Shaun
 
A friend of mine has been doing the 1000 kilometer race at Hockenheim for many years now. One year he rode together with J?rgen Fuchs (ex 250 GP guy) and they won the race on a BMW R1100RR. The event is set up with the first 900 kilometers being used to determine who is qualified for the 100 km sprint race at the end. He has used the last two years the Road Attack 2 in the 900 km part. He said they work great and they didn't have to waste time on tire changes. The tire went the distance with a KTM LC8 and they were running times only a couple of seconds off of their best with the Race Attacks. If it survives that sort of torture it should do perfectly fine with a Laverda. I've sold and mounted tons of these things over the last several years and haven't heard a single complaint. Good in the rain, good traction, and they don't melt and disappear after a couple thousand kilometers.

Tom
 
Two queries then
1) is an H rated tyre OK on a 140mph bike? (although the evidence from SPA would seem to be yes!)
2)  will it fit with clearance in the swingarm?.  it seems even tyres with similar spec  (eg 150/70) can measure different width on the same rim. or is that just me  getting it wrong?
I ran a 150/70 on a Corsa with 630 chain and wasn't aware of any clearance issue.

Ralph

 
H rating is and always was max 130 mph.  I'm pretty sure V ratings were around in 79 but I suspect they were in short supply in the mid 70's.(my guess)

If your going to the trouble of fitting wider tyres presumably for some benefit other than aesthetic, why not consider something performance orientated instead of H rated dross designed for ER6's and other other commuters.

Avon storms are a good choice, I have run them and still use them occasionally when I put 18" wheels back on, although I moved to BT016 in 18/17 but there are a ton of modern tyres around.
Are you planning to commute or track or both ?

b/ you're right a tyre is allowed I Think up to 10mm deviance either side of the width denoted and I have a 150 on correct rim coming out at 158 and 3 160/17 that are overall 10mm variance, the widest being a wet tyre at 168, had to make wider spacers to spring the swing arm to get it to clear.

18" are more prone to rub the swing arm becuase of the taper in the arm so sometimes you just have to take a chance and experiment as unless someone else has used that tyre, wheel , spacer set up, turned down cush drive, spacer again, its hard to compare apples.

Cheers Rob
 
Rob, got to get back up to speed with the bike first before any track days but wouldn't mins a shot at the odd one.  Lovely roads along the Welsh border country (lucky me)  so rapid blasting there is the initial target.
Agree that H rating dont seem adequate when lots of the 70/80s bikes tuned up will smoke that.(and especially as its aimed at clasic racing!)

Will try some more tyre dealer search engines but so far not so amny 18 inch 150 ish tyres .

I'll look at the Avon Storms as well bt interested to se what people are actually running as well.

Ralph
 
Ralph
Not sure what you mean, whats aimed at classic racing, surely you dont mean the Conti Road attack  or you mean H rated tyres in general? anyway read on :...-->

You've got one modern radial Sport touring there in the above, the Storms have prob been superseded by Storm 2 or Rain ST, look on Avons website.
Bridgstone BT012ss are favoured in Europe and are up in a world of their own but pricey, a few of the guys here use them for track/road use.

I've just bought Dunlop Qualifier 2's becuase they came out top in a recognised review of 10 top sports tyres on track, rain and dry but suspect they wont be in 18".

Clem runs Roadrunners for several miles I suspect and several others do, Check out also BT45 in your sizes and I rate Pirelli Sport Demon if they still make them and possibly in your sizes.
Looking at the Round and Black website below who I've also used for supply there seems to be about 10 ? different modern tyres available to you, hope you find it helpful for sizing purposes.

I get all my tyres mail order from http://www.moto-tyres.co.uk/ but a good search engine is here for rear: http://stores.ebay.co.uk/RoundAndBlack/MOTORCYCLE-Tyres-/_i.html?_nkw=150%2F70-18&_fsub=1203549&_sid=223500329

Front http://stores.ebay.co.uk/RoundAndBlack/MOTORCYCLE-Tyres-/_i.html?_nkw=110%2F80-18&rt=nc&_fsub=1203549&_sid=223500329&_trksid=p4634.c0.m14.l1581&_pgn=2

For COnti Road Attacks, you'll prob have to go to 160/6018 http://www.ebay.co.uk/itm/110-80-18-58W-160-60-18-70W-ZR-Continental-Road-Attack-2-II-Motorcycle-Tyres-/300532335708?pt=UK_Motorcycle_Parts&hash=item45f91f845c Which wouldn't fit a 180 frame I suspect
 
Which wouldn't fit a 180 frame I suspect
Click to expand...
Its actually an SFC 1k but swing arm is a Spondon/Windy corner replacement.  Unfortunately I don't have an original to compare it to re clearance dimensions.  (something else to do!)

Thanks for all the good info and leads leads

Ralph

PS how many rounds of Thunderbike/Bears are left so I can get to see all this orange success?
 
Hi Ralph,
  Snetterton 200 7/8th July
  Brands hatch GP circuit 28/29 July
  Cadwell Park 18/19 August

I shall finish my season at Cadwell.Thunderbikes final meet is Snetterton 200 8/9 Sept.

Andy
 
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