what gearing sould I use???

[mizmissy82]

What's up ? I wanted to know what kind of gearing to use? I have a 85 250r and I want to use 18x10x8 tires,but I want the same speed it has. Its all stock I just want to run the tires thanks on any help.

[250r'en +TCB]

stock gearing is 13/39...... if you want more top end get a 14 tooth front sprocket, if you want more low end get a 12..... you can start taking away and adding teeth to the rear from there to fine tune it to your liking

[Yamaha_Rules69]

right, to keep the top end speed with 18 inch tires you will definatly want to go up at least one tooth in the front, maybe two (if it fits??)

[mizmissy82]

Well I don't race I do a lot of tial rideing I just like the look

[mizmissy82]

Well I don't race I do a lot of tial rideing I just like the look

[MagicJames]

Well if it were me, to keep cost down I would go with a 14 tooth front sprocket.
If that's not enough, like said before drop teeth on the rear sprocket, but rear sprockets are a little more costly

[Yamaha_Rules69]

If you are going to run 18's for trail riding, you better consider ground clearance. I dont know what kind of trails are around you, but around here there is a lot of brush, logs, uneven ground, sticks, rocks, etc. I wouldnt go under a 20'' tire for trail riding, but thats just me, and my riding conditions. Just somthing to consider.....................

[Russell 350X]

Bump it up to a 14 in the front..you can run 15T there but it's close, I don;t know if the case saver will fit then...