80/90 Vs MH90 difference?
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2nd Gear
Joined: Feb 2022
Posts: 6
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From: Ohio
80/90 Vs MH90 difference?
So I just ordered a 80/90 Dunlop 404 for my front wheel for my 2005 Deuce. Factory size is a MH90/21. Of course after I order it and it shipped, I watch a video that the 80/90 tires are not designed for the weight of a HD. Unfortunately all MH90's are sold out everywhere. Its not like a Deuce is super heavy bike. Will these tires work or should I continue to search for a MH90 somewhere?
Thanks, Erik
Thanks, Erik
Road Captain
Joined: Jun 2014
Posts: 598
Likes: 376
From: Sweden
I had the same question some years ago.
(Owned a '09 FLSTC back then).
Checked the load index stated on the OEM tyre compared to the load index of the tyre I was thinking of buying.
On paper both were well above the limit, but after calculating the load during two up + luggage + braking hard from top speed I found that the tyre I was going to buy did not manage that load.
Now I'm not sure if that would become a problem in real life as I did usually ride without passenger and very seldom brakes as hard as possible.
The second thing to check is if the "lesser" tyre would become to hot during long stretches of high speed driving, (we were going to drive on Autobahn trough Germany).
I guess a to warm tyre would increase tyre wear, and in extreme cases a very hot tyre could lose some traction.
A safe bet would be to use tyres regardles of manufacturer with the same specifications as the OEM tyres.
Disclaimer: I'm no pro! There are a lot of more knowledgable members on this forum.
Hopefully some of them will help You out.
(Owned a '09 FLSTC back then).
Checked the load index stated on the OEM tyre compared to the load index of the tyre I was thinking of buying.
On paper both were well above the limit, but after calculating the load during two up + luggage + braking hard from top speed I found that the tyre I was going to buy did not manage that load.
Now I'm not sure if that would become a problem in real life as I did usually ride without passenger and very seldom brakes as hard as possible.
The second thing to check is if the "lesser" tyre would become to hot during long stretches of high speed driving, (we were going to drive on Autobahn trough Germany).
I guess a to warm tyre would increase tyre wear, and in extreme cases a very hot tyre could lose some traction.
A safe bet would be to use tyres regardles of manufacturer with the same specifications as the OEM tyres.
Disclaimer: I'm no pro! There are a lot of more knowledgable members on this forum.
Hopefully some of them will help You out.
Advanced
Joined: Jul 2021
Posts: 51
Likes: 50
From: Pittsburgh
Here's a pic of the 80/90 and the 90/90 side by side. There's not much of a difference, but it's noticable when riding. The 90/90 doesn't follow grooves as easily and feels more planted.
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