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Classic style tyres

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v7john View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote v7john Quote  Post ReplyReply Direct Link To This Post Topic: Classic style tyres
    Posted: 26 Oct 2017 at 22:31
Sorry, a tyre thread.

My V7 700 was taken to the MOT man last week and I wasn't at all surprised when he complained at the state of the tyres and put down "advisories" for both of them. Being fair, he could have failed it on the rear one. The tyres were Michelin Pilot Activs. 4.00-18 at the back and 100/90-18 at the front. I fitted these in March 2015 and have done 9732Km (6082miles) on them. I know it’s a heavy beast but it doesn't exactly have rip-snorting power so I expected better tyre life, especially the front one.

Original factory tyre spec was for 4.00-18 tyres at both ends but this is hard to achieve these days. The only options being with Heidenau and Mitas. The MOT man said he could get me a couple of Dunlop K81s in 4.10-18 size but, I think these are actually a low-profile 4 inch tyre (4 inches wide with 90% aspect ratio) which would put the speedo (even further) out and make it harder to get the bike on the main stand. There is a 4.25/85-18 K81 universal tyre available which would be the right rolling diameter and a pair will probably physically fit. It would slow the steering down but then I only do 55/60 mph tops.

Why am I interested in these tyres? He said I could have them at trade price plus vat. Putting one of these on the front would make it “look right” rather than “under-tyred” as it does now. I’m also hoping they’ll last a little better. My next choice would be Heidenau K36s although I prefer the deep chunky TT100 tread of the Dunlops. Any thoughts? I can’t actually buy them until I’ve built up some funds.
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Oldrat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oldrat Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2017 at 09:15
Interesting post. 👍
It sounds like the same old story John, looks verus performance.
Have you tried any of the specialist classic tyre suppliers, I see them advertised in Motor Cycle Mechanics etc.🤔

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theone&onlymin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote theone&onlymin Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2017 at 12:00
Lasertec come in a straight 4.00 x 18 as I have one on.

Cheers
Min
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ranton_rambler View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2017 at 13:14
Originally posted by theone&onlymin theone&onlymin wrote:

Lasertec come in a straight 4.00 x 18 as I have one on.

Cheers
Min
But is it marked for Front or Rear use? I have Avon Roadriders on my loop. The rear is a 4.00-18 but it is only marked for Rear use. Probably would be fine on the front too but I don't like to take the p**s with my generally helpful MOT man. The front is thus a metric size, 110x18 I think.
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red leader one View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote red leader one Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2017 at 17:39
http://www.metzeler.com/site/uk/products/tyres-catalogue/Lasertec.html

Dimensions

FRONT

REAR

100/90 - 16 M/C 54H TL
110/90 - 16 M/C 59V TL
120/80 VB 16 M/C (60V) TL
100/80 - 17 M/C 52S TL
110/70 - 17 M/C 54H TL
110/80 - 17 M/C 57H TL
110/80 V 17 M/C (57V) TL
120/70 - 17 M/C 58V TL
100/90 - 18 M/C 56H TL
100/90 V 18 M/C (56V) TL
110/80 - 18 M/C 58H TL
110/80 V 18 M/C (58V) TL
110/90 V 18 M/C (61V) TL
90/90 - 18 M/C 51H TL
100/90 - 19 M/C 57H TL
100/90 - 19 M/C 57V TL
110/90 - 19 M/C 62H TL
3.25 - 19 M/C 54H TL
3.25 - 19 M/C 54V TL
3.50 - 19 M/C 57H TL
90/90 - 21 M/C 54H TL
130/90 - 15 M/C 66S TL
130/90 - 16 M/C 67V TL
150/80 VB 16 M/C (71V) TL
130/70 - 17 M/C 62H TL
130/70 - 17 M/C 62S TL
130/80 - 17 M/C 65H TL
130/90 - 17 M/C 68V TL
140/80 B 17 M/C 69V TL
140/80 VB 17 M/C (69V) TL
150/70 - 17 M/C 69H TL
150/70 VB 17 M/C (69V) TL
160/70 B 17 M/C 73V TL
110/90 - 18 M/C 61H TL
120/80 - 18 M/C 62H TL
120/90 - 18 M/C 65H TL
120/90 - 18 M/C 65V TL
130/70 - 18 M/C 63H TL
130/80 V 18 M/C (66V) TL
4.00 - 18 M/C 64V TL

CLOSE



Edited by red leader one - 27 Oct 2017 at 17:50
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ranton_rambler View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2017 at 19:53
So Metzeler 4.00-18 is also rear only....
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v7john View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote v7john Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2017 at 10:48
Yes folks, the issue is finding a 4inch front tyre. There are plenty around for rear use. There is a Metzeler option - the block C which is for front and rear use. Also the Heidenau K34 which is basically the same.

I've spent hours on the net searching and think I'll have a final list of available tyres soon. Yup, too much time on my hands.

I'm coming around to the idea that the 4.25/85-18 K81s are not the way to go while there are at least other options in the correct size.
1972 V7Sport "The Racing Rhino".
1972 V7 700cc "The Fire Bike".

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ruf Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2017 at 12:23
So what`s wrong with the Mitas H-06 ? avaiable as you say in the size you want , cheap at £47 and they are a good tyre, I have used them on a variety of motorcylces with no issues, likewise the Heidenaus are good and 4.00" front and rear available
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ranton_rambler View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2017 at 18:39
I had a look at my Avons and also measured sizes.
Front is a 110/90x18, and is 111mm wide. Marked for front or rear fitment.
Rear is a 4.00-18, and is 116mm wide. Marked for rear fitment only.
Height (therefore diameter) is the same for both as best as I can measure. Tread pattern is also virtually identical, but may be too modern for you John? 
Just about 5mm clearance to the drive tube on the RH side.
Both tyres have done 8000 miles now. The front looks OK for a bit more, but the rear will need changing soon as it's getting close to the wear markers in the centre.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Loopian Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2017 at 19:31
Well on my 1971 v7special, I use Bridgestone bt45s. Front 100x90x18 and Rear 120x90x18. The rear is a bit of a squeeze but it works, I think I might of had to use a packing washer somewhere!. I can have a look if your interested. However I suspect that these tyres may well look a bit too modern, but in my opinion they are a confident inspiring tyre and these days I’ll take any help I can get. I shall look on this thread with interest as I will have to put some tyres on my project Eldorado that I’m hoping to finish this winter. Ps John your blog has been a great source of inspiration. Thanks Ian
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Post Options Post Options   Thanks (0) Thanks(0)   Quote v7john Quote  Post ReplyReply Direct Link To This Post Posted: 30 Oct 2017 at 19:30
Thanks for all the replies. Here are the options for original size tyres that I've come up with.



There are some gaps in the information and I've come across other tyres made by Duro but I can't find any sellers in the UK. There are also some hugely expensive tyres with sawtooth tread patterns as favoured by custom builders but...

I measured my existing Michelin Pilot Activ tyres as best I could.
Rear 4.00-18 (660mm)26.0in diameter, (108mm)4.25in wide.
Front 100/90-18 (635mm)25.0in diameter, (102mm)4.01in wide.

I've pretty much decided to go with the Mitas HO6. They're cheap and I've heard that they are easy to fit. I figure that, if they don't last very well or I hate them, I've paid a lot less than I would for any alternative.
1972 V7Sport "The Racing Rhino".
1972 V7 700cc "The Fire Bike".

Read my blog https://racingrhino.wordpress.com/
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2017 at 00:43
https://www.feked.com/410-x-18-Dunlop-tyre-tt100-k81.html close John.

These are very close John.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kateguy Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2017 at 09:07
They aint gonna need to be mot'd b4 long are they ?
We run same size front n rear on our loops, and have been known to put a rear only on the front....oh hush my mouth.....Heidenaus are ok....but they can be buggers to fit....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2017 at 09:31
Hi Kate,nice to see you back on here young lady.
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ruf Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2017 at 10:21
Originally posted by Dave P. Dave P. wrote:

https://www.feked.com/410-x-18-Dunlop-tyre-tt100-k81.html close John.

These are very close John.

I had a pair of these  on my Aermacchi  350 and after quite a few slides i checked the tyre dates, they were both recent  but the back one was made in indonesia and the front somewhere else (can`t remember where) I wrote to Dunlop and they told me the tyres are also made under licence in Indonesia,   (out of recycled milk cartons maybe) ,  get some Mitas or at least ask where the TT100`s are made, the front one was fine
g3ls/gn250/v35
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