Which size? 17 inch or 18 inch tyres

[gavinnz]

http://www.motorcyclingnz.co.nz/down...ng_Classic.pdf

Thanks for those links I only had the NZCRR site to go from.
From your above link I get for pre 1963...
"All wheels must be of the wire spoked type with rim widths the same as specified for
the original manufactured machine. Maximum rim width is WM 3 (2.15 inches inside
width)."

So no mention of diameter for Classic racing. I bunch of smaller cc bikes of the era including quite a few Moto Guzzi and Aermacchi etc had 17 inch wheels as standard on their road machines.

I still have some LC random small odds and ends in the shed from 15 years ago.... suppose I should hurl them at trademe one day.

Regards
Gavin

[george formby]

Super soft sticky tyre = BT-012SS. The best I've used in the wet but wears out real fast. Metzler Z6 is best of both worlds on them but currently trying out a BT020 as much cheaper. Is your 98 a mark 2? I'm sure mine had a 120/70? The tediums tend to flop when the rear tyre is fooked or some dick has dropped the front forks too much.

I run BT021's & am very happy with grip, particularly the front & they have quite a steep profile giving very good turn in. Great in the wet too.
Yup, I have a MKII, definitely an 18' front. Bridgestone recommended the 012's but i hvae never seen the correct size front listed.
Sorry to go off thread, such a rarity to talk tediums..
Worn Conti's make the bike flop & when you reach the edge of the tyre you can feel it, the bike stops leaning. Weird!

[Dodgyiti]

Go with the 17's.
I think you missed one: Tyre Availability.....

Hi Gavin
Yep, the selection of 18's is crap and becoming less and less as time goes on. All my friggin bikes take 18's and it sucks reading all about new and improved tyre designs only to go to the manufacturer's web site and find they only come in 17'

Lacing 17' rims to the Guzzi hubs shouldn't hurt, but being a single and chain drive you will not be limited by the rear hub/diff anyway like the twins.

Regards,

Mike.

[Racey Rider]

In Partnership with my sponsor Northwest Motorcycles I will be requesting Steve import a range of the German Heidenau brand Race tires in 18" and some 16".

If you let me know what size you are after, I will get some brought into NZ. (No obligation to buy)
'Eta' end of May. Here's a small selection of Race stuff (RSW means Racing Soft Warm) some 18"

A couple of options we have in the country already.
90/90-18
3.00-18
110/80-18

[scracha]

Yup, I have a MKII, definitely an 18' front. Bridgestone recommended the 012's but i hvae never seen the correct size front listed.

Yeah 18" front (much nicer on gravel thankyou very much) but I'm sure mine ran the wider 120/70 but you said you run a 110?

[gavinnz]

I called Ken McIntosh today who confirmed that tyre diameter is not covered under register rules for pre '63 Modified class
So I can use 17inch tyres.

No one has come up with a reason not to which is good! Means I might beon the right track.... no pun intended!
Regards
Gavin

[RDjase]

I called Ken McIntosh today who confirmed that tyre diameter is not covered under register rules for pre '63 Modified class
So I can use 17inch tyres.

No one has come up with a reason not to which is good! Means I might beon the right track.... no pun intended!
Regards
Gavin

How are you getting on with the bike build?

My LC is getting a winter tidy up