RC51 Forums banner

1 - 18 of 18 Posts

·
Registered
Joined
·
27 Posts
Discussion Starter #1
anyone put 180/55,s on the rear? any opinions about this or does everyone stick with the 190?
 

·
Registered
Joined
·
8,655 Posts
A lot of track guys run 180's cause they're cheaper and more common.
Typically a 180 fits on a 5-1/2 inch rim. Our rims are 6 inch. But then again, I've seen manufacturer rec's for a 180/55 to be mounted on either rim width.
A lot of us on this forum run a 190/55 for our street RC51's. They're great on a track too.
Stock size is 190/50-17.
The 55 series is a taller tire with a bigger contact patch at lean angles, and makes tipping into a turn easier and quicker.
 

Attachments

·
Registered
Joined
·
897 Posts
190/55 is a great size, thats what I run. Ive never run a 180/55 but it looks very similar, but like jondog said, the rim size is more conducive to a 190 width. All the cool kids run 190/55!

Sent from Motorcycle.com Free App
 

·
Premium Member
Joined
·
1,534 Posts
A lot of track guys run 180's cause they're cheaper and more common.
Typically a 180 fits on a 5-1/2 inch rim. Our rims are 6 inch. But then again, I've seen manufacturer rec's for a 180/55 to be mounted on either rim width.
A lot of us on this forum run a 190/55 for our street RC51's. They're great on a track too.
Stock size is 190/50-17.
The 55 series is a taller tire with a bigger contact patch at lean angles, and makes tipping into a turn easier and quicker.
JD is right, most people that mount the 180/55 do it to save money because they go through tires much faster at the track. It gives you a taller profile for a slightly cheaper price, but I think the overall contact patch is not as big the 190/55.

For regular riding the stock 190/50 is fine. I'm still running 190/50 on my SP2 even at the track (since the tires were new and I didn't feel like spending the money right away to change) and I have no problems. Next summer when I need to replace I will go back to a 190/55.
 

·
Premium Member
Joined
·
1,534 Posts
Some people even run a 200 size.

200 is stock on a HP4 (not an RC I know)...but just saying that there are different combinations on what you want to do based on your riding style.
 

·
Registered
Joined
·
2,181 Posts
Search is your friend. This has been discussed, and discussed, and discussed, and discussed, and discussed,........
 

·
Premium Member
Joined
·
1,580 Posts
I run the 190/50.
So will I have fitment issues with a new chain running a 190/55?
My is at the end of its life cycle. I would hate to buy new tires and chain and sprockets and they not fit :eek:
 

·
Registered
Joined
·
897 Posts

·
Premium Member
Joined
·
1,580 Posts
Your swingarm is rounded on the SP2. The SP1 is squared.
I think you guys have a little more clearance.
 

·
Premium Member
Joined
·
1,580 Posts
I think I'll try the 190/55 anyway...
 

·
Registered
Joined
·
8,655 Posts
I run the 190/50.
So will I have fitment issues with a new chain running a 190/55?
My is at the end of its life cycle. I would hate to buy new tires and chain and sprockets and they not fit :eek:
Cool thanks. I bought a 190/55
You may need to add 1 link over stock length:
SP2 = 106 links
SP1 = 104 links

I had to increase my chain to 106 on my SP1 to keep the 190/55 from being too close to the swinger. When you combine the taller tire with a bigger rear sprocket -which is 42 tooth in my case- you can run out of room with the stock length chain.
Buy a chain that's not precut. DID usually gives you 120 links to work with - so just cut to fit.
 
1 - 18 of 18 Posts
Top