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So, I have a Fat 40 on the front already and looking to match the rear. Wanting the 18". But, I see its comes in a 3.5" or 4.25" width. I am thinking the wider will look better? But, what size tire would I run to fit my 2010 Deluxe without any problems. What are you guys running and what do you like?
I hope you get some response to this, as I am also interested. I can say with the stock 3" wide 16" rims and an MU85 tire, there's only 1/4 to 3/8" clearance at some spots. So, "id be hesitant about the 4.25" unless I saw some photos of that size installed
4.25 /18 will go under there. Im assuming you have a 150 tire year with the 16. Inside the struts there is 7.25 between the rails. I have a 170/70/16 under my Train and my wifes 04 Springer on 4 rims with room. Theres one bolt and nut that needs to be changed to a capture nut on each side.160/80/16 will also fit if you can find them anymore. Also I run Shinkos 777 tires that tend to run a little lower in profile also. Im getting more mileage out of them than anything Ive run to date. Great tire in the rain.
You can run lower profile tires on the 18 rims. That keeps the tire out of the top of the fender giving you more room.
I Can dump all the air and still do not rub.
Last edited by back again; Nov 14, 2020 at 07:37 PM.
So, I have a Fat 40 on the front already and looking to match the rear. Wanting the 18". But, I see its comes in a 3.5" or 4.25" width. I am thinking the wider will look better? But, what size tire would I run to fit my 2010 Deluxe without any problems. What are you guys running and what do you like?
Thanks for your help!
I'm running the Danny Fat 40 on the rear as well as the front. Went with the 3.5" width. You may be able to fit a 4.25 but there isn't much room. I have a 2006 deluxe. I'll snap a better picture tomorrow to show how it fills the rear fender.
I'm running a Metzeler ME 888 Marathon Ultra Motorcycle Tire Rear, 150/70-18
Last edited by mean green; Nov 25, 2020 at 10:37 PM.
Reason: info
Simple math and accurate measurements will tell you what you can use. 140/ 150 tire bikes are what I do mostly.
To start with most pre 200 tire soft tails have 7.25” between frame horns so before I change to a bigger tire I check that dimension first. Most spoked softy wheels have offset built in them. You can change this by readjusting your hub one way or another with spoke adjustment. A spacer may be needed to keep rotor in line. Lots of variations in stock wheels so CHECK first. The later 2k models have the skinny belt which is also a factor how big you can go also. Early 2k bikes have the 1-1/4” belt and limits you to a 150-80-16 tire which really fills up the longer fenders on Heritage and FatBoy models.The 1” belt lets you run up to a 160/80/16,170-60-16 if you run a 777 Shinko. Other brands Metzler and Avon’s run bigger than the Shinko’s. I can’t tell you about any other brand sizing as these 3 are the ones I’ve installed.Math will get you the rest of the way. Every bike is a little different, measure,measure,measure. You shouldn’t see more than 1/8” difference.Ive done 20 or so of these tires conversions and haven’t found any difference bigger than the 1/8”. Remember you can adjust your hub in the rim if needed. Ride Wright and Black Bike Wheels will build the wheels the way you want if you tell them what your doing. Other brand wheels other than HD I don’t mess with. You get what you pay for. Simple math
140 mm = 5.51” divided by 2 = 2.75” leaving you 1.74” clearance between frame rails 7.25-5.51=1.74” is what I get clearance wise.
150mm = 5.90”. 2=2.95. 1.35”
160mm = 6.29”. 2= 3.14. .96”
These are 80 series tires measurements on stock Harley spoke wheels.Any Tires you can find with a lower aspect ratio gives you more room in fender well. Width remains the same The fender slims in width the higher you go in it. This conventions works on Evo bikes also
The 170 Shinko I use requires a little more work and will explain if someone wants. G.
Last edited by back again; Nov 27, 2020 at 07:44 PM.
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Fat Spoke on Deluxe question:
