What I did to my GZ250 today thread

[jonathan180iq]

Cathy, have you come across this post?
If a 120/80-16 can work, then a 120/90 should. Worst case, just raise the front fender a little bit.
~~~~~~~~~~~~~~~~~~~~~~~~

Modifying the GZ - What's Available?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~

There aren't many tire options for our bike that come in a matching set. There are, however, many options if you don't mind mixing up tire brands and/or going to a slightly smaller tire up front.

The factory tires sizes are: 110/90-16 (F) & 130/90-15 (R)

The rim width for the front wheel is 2.5" and the rear wheel width is 3.0"
That being the case, a size 100/90-16 front tire will work on this bike. It does have an overall diameter decrease of 9mm over the 110/90-16 but that isn't really very drastic.

Samato has verified that alternate tire size 100/90-16 will mount up with no problem.

As well, the 120/80-16 alternate tire size is another choice for the front tire and has been successfully mounted by MRLMD1.

Factory replacement tires: 110/90-16 & 130/90-15
Dunlop D404 (only available through a Suzuki dealer)
Metzeler ME77 (only available through a Suzuki dealer)
Cheng Shin C906 & C907 (possibly no longer available)

Rear Factory Replacements:
Kenda Challenger
Pirelli MT66 (Route 66)
Maxxis M6103
Cheng Shin Marquis
Metzeler Me 77

Factory Replacement Front:
GBC Green Shark
Metzler Lasertec
Pirelli Sport Demon
Avon Roadrider AM26
Conti Ultra TKV11
Kenda K671 & K673

100/90-16 Front:
Bridgestone BT45
Maxxis M6002
Cheng Shin C6000
Kenda Cruiser
IRC Durotour

Matching tires with low profile front: 100/91-16 & 130/90-15:
Kenda Cruiser



For more discussion and lots of info, see these posts:

http://www.gz250bike.com/forum/viewtopic.php?f=10&t=722

&

http://www.gz250bike.com/forum/viewtopi ... =10&t=1818






This list is not complete but will be updated as more options are discovered...

[grasshopper]

on the backrest issue. daddylaci did a post on a backrest. looks real nice.

[grasshopper]

drivers backrest topic. vikz 250 also did a diy post on this subject.

[grasshopper]

this what I have done so far on the drivers backrest.

[Cathy]

Qasual - Jonathan I have seen that in almost all the tire threads I have looked through. Harharhar.

I think I may be the first to try and give a review on.

[jonathan180iq]

It's mind boggling how it's never mentioned!

I would slap it on there and drill some new eyelets for the fender raise. It shouldn't be an issue.

[grasshopper]

well I got the driver backrest on my gz done. I still have to go for a longer ride to see how it feels. went up the street and back felt fine. it supports me in the middle of my back at this height. I may lower it depending on how the longer ride feels. here are the pics. I bought the backrest pad on ebay for 15$ new, the bracket from lowes for $7.50, had the black paint and screws and washers already. just had to warm the bracket up and bend it in a vise. the holes were already in the bracket and only had to drill one hole in it to mount it to the gz. I'm waiting for the passenger backrest to get here to put it on.

[Goose51683]

Looks comfy

[Cathy]

Qasual - Today I had another thought to a possible mini project. I do not know why I have not thought of this sooner but a 16t conversion is actually viable for Cathy, like dang. She is a 5'2" 9x lb little Asian girl, every thread on here I have skimmed through everyone is a minimum of 160 lbs +. I have come to a realization that she could get better gearing and still have power in 5th. Bwahahaha. I feel so dumb.

Les do this over the New years !

[grasshopper]

Qasual, she should be flying on anything she rides at that size. lol.
goose, it is comfy, I rode it to work this morning and felt good. I think I need to lower it just a couple of inches to hit the sweet spot on my back.