401 tyre size range

Hi just want find out if other tyre size are compatible on the 401 svartpilen '21 ie 160 60 r17 or 170 60 r17? Same idea with the front. Cheers

I've watched several reviews of the new Honda Hornet 750 and all of them raved about the handling. It's got a smaller rear tire than is usual for the class, 160mm, that is being given some of the credit.

I'm wondering the complete opposite, would smaller tires improve the handling of the 401?

At any rate, I don't think a 160 or 170 would fit a 401.
 
On my bike I see 11.3mm clearance between chain and rear tire. A 160 would reduce that by 5mm to 6.3mm or 1/4 inch. A 170 reduces clearance 10 mm to 1.3mm or .05 inches or a quarter the thickness of a pasteboard box.

Kinda tight , clearance wise, with a 160, and there are slight variations in each manufacturer's 160s, but theoretically it will fit.
A 170 is too tight. The rim is narrower than ideal for the 160 and worse with the 170.

Looks to me like a 120 will fit up front, but hanging gravel between tire and fender might be a concern.
 
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So if we do street tyres, we could safely go for:
Front 80
Rear 70

What about width, would it be ok to go one size up without a problem? I will check later and confirm, but please let me know your thoughts.

Front 120
Read 160

Handling wise we would like to maintain the same width, correct? Easier to move the bike around with the thinner the wheels?
 
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So if we do street tyres, we could safely go for:
Front 80
Rear 70

What about width, would it be ok to go one size up without a problem? I will check later and confirm, but please let me know your thoughts.

Front 120
Read 160

Handling wise we would like to maintain the same width, correct? Easier to move the bike around with the thinner the wheels?

A 120/70 front is .55 inches bigger in diameter, so will reduce front fender clearance (vertically) by a bit more than a quarter inch.
A 110/ 80 is .87 inches bigger and will reduce clearance .435.
Clearance with the stock 110? Hard to tell.

My guess and it is only a guess, is that a slight bump in size would have less effect on handling than the tread and construction of the tire.
A smaller tire is a lighter tire and that is a clear advantage on modestly powered bikes.

Going from a 150/60 to a 160/60 rear will introduce a 2% speedo error.
Going from a 150/60 to a 150/70 gives a 5% diff in dia. with a matching speedo error
I am assuming the speed sample is taken at the back but I have no certainty.
 
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What was the concensus on this? I got a nail in my rear Road 6, but of course the odd 150/60 sizing is out of stock...
The 160/60 is however.

Considering grabbing a cheap Dunlop GPR300 while I wait for the Road 6 to come back in stock.

Given the very soft compound, that should grant me around 5-6k miles while I wait.

But I've ridden on the GPR300 before and wasn't impressed. Especially in inclement weather. I ride year round, but it will be getting cold soon, and then the rain hits. I'd really rather be on a Road 6 by then.
 
A nail in the sidewall of the tire? If not, why not patch it and get a new tube?

Here is some info I was saving for when I have to replace my tires, I have no clue how true it is...

"General consensus on the Duke/RC forums is that going narrower and thicker in the rear to 140/70/17 results in the best handling. Reasoning is that the wheel is already too narrow for the 150/60. The 140/70 also gives you 2.5% taller gearing. About the same effect as a 44T rear sprocket."

Found that info on reddit...
 
A nail in the sidewall of the tire? If not, why not patch it and get a new tube?

Here is some info I was saving for when I have to replace my tires, I have no clue how true it is...

"General consensus on the Duke/RC forums is that going narrower and thicker in the rear to 140/70/17 results in the best handling. Reasoning is that the wheel is already too narrow for the 150/60. The 140/70 also gives you 2.5% taller gearing. About the same effect as a 44T rear sprocket."

Found that info on reddit...
Interesting...

Of course the 140/70/17 is ALSO out of stock, so doesn't save me 😅

But if people are seeing better contact area and handling with that size, it's worth ordering when THAT comes in, instead of the stock 15/60/17.

I'm worried that the increased circumference may require an additional chain linkage though, and I literally had my chain pop/replaced like 2 weeks ago.

It's been a shitty few weeks...

As for plugging it, I haven't plugged a tire before, and not sure if these are tubeless or not.

Every source I find online contradicts another, and it didn't come up the last time I had to replace my tires, so as far as I can tell, I don't have tubes.
 
If your bike has spoked rims, like most of them do, it's almost guaranteed to have a tube. They come stock with tubes, and converting to tubeless can be a pain on spoked rims.

Where is the puncture in the tire? As long as it's not on the sidewall you should be fine. Call a shop that does motorcycle tires and ask them if they can repair it. If there is good tread left on the tire that's what I would do.

Changing tire size has nothing to do with the chain, so don't worry about that.
 
Digging this up with some information from a major tyre manufacturer - Maxxis.

This link gives their recommended tyre sizes (in red) plus a range of tyre sizes that fit various rim widths.

Clearance to other parts is a separate issue for your bike.

 
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