www.zxrworld.co.uk

Posted: **Fri Apr 13, 2007 8:43 am**

yeah, but the actual rim is probably about 3.5" wide which will take a max 160 tyre apparently.But you can fit a 170 on a 3.5" rim, if you look on the side of the rim it should tell you the rim size.Can anyone confirm?

Posted: **Tue Apr 17, 2007 4:01 pm**

I checked the writing on the rim, and it seems to indicate a 4.5" rim?

Posted: **Tue Apr 17, 2007 4:13 pm**

i'll see if i can find a guide to tyre widths.

Posted: **Tue Apr 17, 2007 4:22 pm**

Thanks Mate. That will really help

Posted: **Tue Apr 17, 2007 4:40 pm**

Rim Width/Tyre Size Chart
This chart has been compiled from a number of tyre manufacturers charts to give an overview of fitments possible, for more specific information contact your tyre manufacturer.
The shaded area shows the possible rims for a tyre size including the recommended fitment.

This information has been taken from the web and neither myself,zxrworld or zxr400owners club will be held responsible for any incorrect information, it is merely posted here for a guide only.

Posted: **Tue Apr 17, 2007 4:44 pm**

So, if the rim is indeed a 4.5", then the 170 should fit fine (if I am reading this correctly)?

Posted: **Tue Apr 17, 2007 9:52 pm**

yep, although it doesn't show a 4.5" rim (bloody typical) it shows a 4.25" with a std fitment of 160 but possibility of a 170., anyway my rim is 4.5" and i have a 170 on it, have done for 2nhalf years now.

Posted: **Tue Apr 17, 2007 11:48 pm**

Its not as easy as wider tyre = slower turn in because you are squashing it into a smaller gap it ends up with a taller profile, therefore its a balance of the two things.

Posted: **Thu Apr 19, 2007 3:51 pm**

Well, I suppose the only way to find out how much of a difference it makes, and in what way, would be for me to buy a slightly used 170....fit it...and take the bike on the track

I will put that on my list of 200 things to do to the bike

Posted: **Thu Apr 19, 2007 5:00 pm**

Ummm... I'm sure I've posted this on another thread here because it feels like deja-vu....

Anyway, number 1 reason why you don't want a 170 tyre:

They're like -ing gold dust to get them cheap or part-worn!!!

My VFR has a 170 rear and I've been quoted Â£180 for a BT020 before now!

You'll pick up part-worn 160's for pennies - you won't get a 170 cheap.

If I could, I'd be using 180's, but they won't clear my swing-arm.

Also, I tried a wider tyre on another bike of mine, and it handled like complete shite in the corners even after serious suspension-tweaking. The wider rear basically makes it push so you get mild understeer and the bike doesn't want to drop into the corners.

Why you'd want to do that to a ZXR400 is beyond me!

Posted: **Thu Apr 19, 2007 5:02 pm**

paid Â£132 for my diablo from wheelhouse tyres.

Posted: **Thu Apr 19, 2007 5:11 pm**

Yeah, I managed to get the BT020 down to about Â£110 from Stealth...

If it was 160 or 180 you could get a pair for the money of one rear if you shop around!

We're being discriminated against for riding our old iddy-biddy slow old-mens bikes...

Posted: **Thu Apr 26, 2007 12:41 pm**

MonkeyBusiness
I fitted a 180/55/17 on my bike (Bridgestone BT57) and there is no real difference... I almost scrapped my foot peg the other day taking a corner on the magaliesburg road...

Your welcome to come and test drive the bike to feel the difference

BTW which track to you go to?

Posted: **Thu Apr 26, 2007 1:40 pm**

Hey BlackBox. Thanks for the info.

I will definately take you up on your offer. I take it you use your ZXR400 on your breakfast runs? Where do you usually start / end (stop for breakfast)?

Oh, and I like to take the ZXR400 on Swartkops, because it is a short track, so the bigger bikes don't have that much of a chance to get away before the next corner