[SBK]

I know I've seen some discussion here about it, but can't find via search:

What kind of special tricks are required to run a 5" rear on a recent ('03 or '04) Yamaha 450? Specific tire size requirements? Thanks for any info or suggestions.

It will probably be doing more street 'tard work than track stuff for now, but I'd like to do a couple trackdays with it and possibly some club racing at some point. I can do a 4.25" rear, but would prefer to just go for the 5" unless there's a major issue with clearances.

 

[EastCoastWheels]

no clearance issues, just offset the rim when lacing... 5" fits fine

 

[ronwest99]

4.25 is for street bikes, 5 or 5.5 is for race bikes. It's that simple

 

[SBK]

4.25 is for street bikes, 5 or 5.5 is for race bikes. It's that simple

But Ron, what if I just wannabe just like one of the cool kids. Duzzat count?

Seriously though, if as Jeff notes, it's not a big deal to run the 5", why wouldn't I?

 

[Quickbrit]

The only issues with a 5.00 over a 4.25, is that you have to remove the chain guide each time you change tires - no biggie really.

I wish I'd upgraded a long time ago - much better tire selection available.

MikeE

 

[backdrifter]

4.25 is for street bikes, 5 or 5.5 is for race bikes. It's that simple

Yeah, I don't buy that. I think the 4.25's will eventually disappear. I have a street moto and I like the width of the 5" rear. I would never opt for the 4.25" if you can fit the 5", but that's just me.

 

[motart]

here's a good link http://www.markburkhart.com/index.html?row1col2=Supermotard.html

 

[Twister]

So no need to use spacers on the rear sprocket...

 

[Big Zero]

I have a 2000 YZ426F with a 5" rear on it. I didn't have to remove the chain guide to install the tire and wheel. It takes a little patience, but it will go in there without dismanteling the bike. I had to off-set the rim a tad to allow the tire to clear the chain. It is a bit closer than I would like, but it will wear its way in. When I get new rubber, I may opt for a little narrower tire. I have a Maxxis 165 on the rear now. On my old TZ250 with a 5" rim I think I ran something like a 155. I may go that route to allow the chain a bit more clearance.

The 5" does flatten out the tread pattern better than the 4.25. The more rubber on the road at one time the better.

Later

Paul G

 

[psycandy]

ok wat if i want to fit a 5" to my 98 wr400f is it possible?

 

[EastCoastWheels]

yes, 5" fit the WR's YZ's CRF and KTM's with no problems... No "flipping front sprockets" or "spacing rear sprockets" are necessary... Depending on the profile of the tire you put on it, you may have to adjust the rim over a little more vs. the hub...
Jeff

 

[psycandy]

thanks jeff!
but can i run profile like 160 or 165 with the 5 incher?

 

[EastCoastWheels]

Yes... That's the size you would want to run on the 5".
Jeff