Imperial/Metric tyre sizes

So... if I wanted to fit an imperial sized 4.75-17 tyre to a (tubed) rim
currently carrying a 130/80-17 would I be completely stupid?

The rim is specified as a 17M/C x MT2.75.

 

A 3" rim would be better, but no, not completely stupid, it'll be fine.

 

If all of going need new tyres it might be worth doing a bulk order
and getting the distribution done at the same time as we do beers.

We'd probably be better taking that discussion to the 'A' list rather
than cluttering up this place.

 

It's going on an XT660.

Surely the aspect ratio makes it taller rather than wider so whilst it
might (pretty sure it won't) foul the swing arm it shouldn't hit the
chain because it won't be any wider?

Guess best I can do is take some measurements. Don't really want to
**** about having another rim put on the hub.

 

After spending half an hour with the calculator it appears the 4.75
tyre is a tiny bit narrower than a 130 so it should be ok. I'd
previously consulted the tyre fitting bible I have here, that gives
maximum recommended sizes for different rims.

--
Lozzo
Versys 650 Tourer, CBR600F-W racebike in the making, TS250C, RD400F
(somewhere)
BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
they churn out)

 

The actual sizes can vary massively with knobblies (which I assumed is
what we're talking about). Could be anywhere from 120 to 140 depending
on make. A potential problem with a tubeless road tyre, but not an
issue with a tubed knobbly.

 

When I replaced the 3.50x18 on the rear of the TS185 with a 4.00x18,
it ripped lumps out of the chainguard.

Sounds like I'd pegged playing cards to the spokes.

 

once a farmer...

 

I'd guess he wants to put a proper knobbly on it for serious
off-roading, & a 4.50 ain't gonna cut it on an XT660.

 

Trelleborg army specials.

 

Heh, I had the (mis)fortune to see a pair of those in action on a bike
in front of me on greasy french roads earlier in the year.

I think he soiled his undercrackers several times...

Paul.

 

ding. And, also, the tyre I want to use isn't available in metric
sizes.

 

Thanks.

 

Auh.. so it was wet, greasy roads and they er... lost traction on
corners?

Good job I don't wear undercrackers then I guess...

 

I'm after an MT500 and wondered if you had any tips.

 

Eat lots of spinach. The damn things weigh a _ton_!

JB

 

You've probably found this already:
http://www.motorcycle.co.uk/Articles/Buyers-guide/The-Armstrong-MT500---MT350.aspx
The bit about starting would worry me.....

Steve

 

4 of the lads in our club have these. One guy has several (but he is really
'comitted'). When we go out trail bashing and one of the MT riders falls off
or stalls it, we might as well get our gear off and have a breather while he
tries to start it hot or when flooded. Talk about a chore....
Another 2 have the CCM603 which have a similar motor but with electric
start. These too are a pig to start hot, even with the decompressor/valve
lifter.
I'll stick with my nice light, easy to start strokers thanks.

JB

 

I'm after a tough four stroke trials/enduro machine - budget is ?800 -
?1000.

Actually, I'll start another thread.

 

Are you sure about that? Cos if you are, why are you considering a
trail bike?