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Discussion Starter · #1 ·
I have a 2001 xl883h with a stock 130-90-16. What is the biggest rear tire I can go with this application, 140, 150 or just leave it the same. The wheel and tire is stock. There is 2 inches before is hits the back.

Thanks, John
 

· Just Ride
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Got to worry about the sides
 

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So just stick with a 130, it didn't look like it would rub, or should I try a 140?
This is from my experience of owning many brands and I guess close to 50 bikes since 1968, and having changed quite a number of tires in my shop, I found that in every case the bikes would accommodate one up-size with the stock swing arm. All bets are off on custom jobs. Just to be sure, I always measured the sidewaqll clearance and the prospective new tire with a caliper. Do your own measurements and make sure. Take from it what you will, but always verify.
 

· V-Twin Junkie
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While the trend has been to widen tires on motorcycles, much of the benefit is dubious as an aftermarket approach. Wider tires tend to steer slower, especially on bikes whose geometry was engineered for skinny rubber. They also need to be lower profile when configured to replace a narrower, taller tire , so they ride a bit more harshly. I think most of us have gone through a phase when we wanted to jam wider tires onto most everything we rode or drove, but there is a cost beyond dollars there: A slower steering, less agile bike that doesn't ride quite as well.
 

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Some Sportsters came with a 150 -80 x16 rear tire. It's a Dunlop d401. It is designed to fit on a three and a quarter inch wide rim which is basically what the factory rear Rim is. Your issue is going to be the sidewall of the tire clearing the wider belt that comes on a 2001 versus the narrower belt that came out in 2004. The other thing you're going to run into is clearance of the sidewall at the rear fender strut. Different tire widths and sizes and Brands can all determine at a plus or minus 7% size variants what will or will not fit. Sometimes it's hit or miss. Changing to a chain drive will give you room. I've dome that...
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Discussion Starter · #7 ·
Some Sportsters came with a 150 -80 x16 rear tire. It's a Dunlop d401. It is designed to fit on a three and a quarter inch wide rim which is basically what the factory rear Rim is. Your issue is going to be the sidewall of the tire clearing the wider belt that comes on a 2001 versus the narrower belt that came out in 2004. The other thing you're going to run into is clearance of the sidewall at the rear fender strut. Different tire widths and sizes and Brands can all determine at a plus or minus 7% size variants what will or will not fit. Sometimes it's hit or miss. Changing to a chain drive will give you room. I've dome that... View attachment 819351
What size tire is that, that it fits, your sportster looks like mine
 

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Hey! Dave 63 is back. (y)
 

· 91 FXLR
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Do what you want on the tire but remember the larger tire the Less RPM's, The Less Gas you use the Higher the Speed on the Interstate. Both my bikes have a Baker OD 6 Transmissions and I can run 85 MPH easy on the Interstate Hwy's and turn 2700 RPMs.
 

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Back in the early eighties and late seventies my logical (alcohol soaked meth filled brain) solution to the problem was to get rid of the shocks and weld on a hardball and beat the crap out of my kidneys and hemorrhoids for the next decade
 
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