17" rear wheel on EVO Dyna/FXR
#11
05-23-2017, 05:03 AM
O u c h !
The only stock Harley 17" wheels I know of have a 4.5" wide rim, as used on some Softail, CVO and Dyna models, whereas the stock 16" wheel has a 3" wide rim. An MT-130/90x16 is around 640mm OD. Depending on brand a 130/70x17 will be similar in diameter, but will not fit a 4.5" rim, which is too wide.
If you have wire-spoked wheels then replacing your rear rim with a suitable 17" is one any competent wheel builder should be able to do. For a suitable cast wheel you may have a bit of a challenge!
If you have wire-spoked wheels then replacing your rear rim with a suitable 17" is one any competent wheel builder should be able to do. For a suitable cast wheel you may have a bit of a challenge!
I'll have to go and have a chat with my Indy...
#12
05-23-2017, 05:33 AM
Club Member
All the major brands make suitable tyres, including Pirelli! An MT has a load rating of around 74 for comparison.
As for rim width, a strange thing happened in the motorcycle tyre market, which can be described by the tyres H-D has used over the years. The MT -130/90, MU - 140/85 and 150/80 all fit a 3" wide rim. The next size up Harley turned to is 160/70, which goes on a 4.5" wide rim! Nothing in between.
When looking at alternative rims, consider also going to a narrower belt (which will require a narrower rear pulley), which will allow you to fit a 150 wide tyre. Study a few tyre brand websites, to get a clear idea of a suitable rear tyre for your project. That's exactly what I did before settling on the Avon Storm 160/70 for my Glide.
As for rim width, a strange thing happened in the motorcycle tyre market, which can be described by the tyres H-D has used over the years. The MT -130/90, MU - 140/85 and 150/80 all fit a 3" wide rim. The next size up Harley turned to is 160/70, which goes on a 4.5" wide rim! Nothing in between.
When looking at alternative rims, consider also going to a narrower belt (which will require a narrower rear pulley), which will allow you to fit a 150 wide tyre. Study a few tyre brand websites, to get a clear idea of a suitable rear tyre for your project. That's exactly what I did before settling on the Avon Storm 160/70 for my Glide.
#13
05-23-2017, 08:49 AM
Club Member
Interesting question, and you DO have a point.
Let's see...
In 130/90x16 size,
Dunlop's 404 is rated 67S or 67H
Dunlop's 491 is rated 67H
Dunlop's 502 is rated 67V (this is my current tire)
On the other hand, the dualsports tires I mentioned (130/80x17) are all rated 65S, T or H.
To me, this makes negligible difference because :
- speed rating is superior to any intended road use (who, me, speeding at 120mph? or even 80mph...)
- weight load rating is more than compatible, as the two units difference (67 v. 65) mean ~17Kg or ~40 lbs on a fully laden bike.
More specifically, a "65" tire will bear up to 290Kg (each), a "67" tire up to 307Kg (each).
Considering I'd be riding solo with roughly 20 kg (45 lbs) baggage, methinks a 65 rating dualsport tire more than suffices.
Dyna = 290Kg; myself = 100Kg; baggage = 20 Kg; full tank + 10l. reservoir = 30Kg;
TOTAL 440 Kg v. 580 Kg of two "65" rated tires.
(The Dyna weighs 290 Kg, the FXR is rated 245 Kg...)
Alas... if only the MoCo asked for a duasports tire, Dunlop would be more than happy to oblige...
Let's see...
In 130/90x16 size,
Dunlop's 404 is rated 67S or 67H
Dunlop's 491 is rated 67H
Dunlop's 502 is rated 67V (this is my current tire)
On the other hand, the dualsports tires I mentioned (130/80x17) are all rated 65S, T or H.
To me, this makes negligible difference because :
- speed rating is superior to any intended road use (who, me, speeding at 120mph? or even 80mph...)
- weight load rating is more than compatible, as the two units difference (67 v. 65) mean ~17Kg or ~40 lbs on a fully laden bike.
More specifically, a "65" tire will bear up to 290Kg (each), a "67" tire up to 307Kg (each).
Considering I'd be riding solo with roughly 20 kg (45 lbs) baggage, methinks a 65 rating dualsport tire more than suffices.
Dyna = 290Kg; myself = 100Kg; baggage = 20 Kg; full tank + 10l. reservoir = 30Kg;
TOTAL 440 Kg v. 580 Kg of two "65" rated tires.
(The Dyna weighs 290 Kg, the FXR is rated 245 Kg...)
Alas... if only the MoCo asked for a duasports tire, Dunlop would be more than happy to oblige...
I don't think you're comparing to what would have been original or currently recommended for the FXR. The "67" you're currently using would be already lower than that.
...As for rim width, a strange thing happened in the motorcycle tyre market, which can be described by the tyres H-D has used over the years. The MT -130/90, MU - 140/85 and 150/80 all fit a 3" wide rim. The next size up Harley turned to is 160/70, which goes on a 4.5" wide rim! Nothing in between...
Why would Harley want to incur new costs when an existing rim size would still be capable of accommodating an increase in tire width...to a point. Then they had to widen the rim for another increase
.
Last edited by multihdrdr; 05-23-2017 at 08:54 AM.
#14
05-23-2017, 09:02 AM
Club Member
The point I was making is that while the tyre industry made those three sizes to fit a 3" wide rim, when they went to the next width up, with a further reduction in aspect ratio, they substantially increased the rim width.
#15
05-23-2017, 09:18 AM
Club Member
Well, sure they would make a significant increase. Why would someone make a change in rim size so small that you would already be at the top of the range for that particular tire.
For a 160/70-17, they could have used a 3.75" rim, but by using a 4.5" they left room for wider tires. This is illustrated by their later mounting of a 180/60-17 on the same rim.
.
For a 160/70-17, they could have used a 3.75" rim, but by using a 4.5" they left room for wider tires. This is illustrated by their later mounting of a 180/60-17 on the same rim.
.
#16
05-23-2017, 09:36 AM
Club Member
#17
05-23-2017, 09:41 AM
Club Member
WRONG...
(you should research more, but at least you said it with confidence)
Dyna Wide Glides don't use 5" rims...same 4.5" rim
BTW, this statement would have been easy to "fact check" before the inaccurate contrary statement was made
.
(you should research more, but at least you said it with confidence)
Dyna Wide Glides don't use 5" rims...same 4.5" rim
BTW, this statement would have been easy to "fact check" before the inaccurate contrary statement was made
.
Last edited by multihdrdr; 05-23-2017 at 10:27 AM.
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