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StoneFree

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#4 ·
[email protected] said:
Yeap Stonefree wider tyres...
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Then the problem is wider wheels and not tires. There are no after market wheels for the Street 500/750 yet to my knowledge. We can find tires for almost any size wheel.


Of note I'm making custom wire spoke wheels for my Street 750 chopper project and the greatest problem I have is that there are no after market 80-tooth drive sprokets which is what the Street 750 has. I'm having to switch to a 70-tooth and even that is on back order from J&P Cycles. This requires a different speedometer that is programable (I'm using a Dakota Digital MCL-5400) because of the change in the final drive ratio. It is a very expensive change.
 
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#5 ·
StoneFree said:
Then ........
Of note I'm making custom wire spoke wheels for my Street 750 chopper project and the greatest problem I have is that there are no after market 80-tooth drive sprokets which is what the Street 750 has. I'm having to switch to a 70-tooth and even that is on back order from J&P Cycles. This requires a different speedometer that is programable (I'm using a Dakota Digital MCL-5400) because of the change in the final drive ratio. It is a very expensive change.
Click to expand...
If you change the sprocket and have 70 teeth as compared to the original 80 tooth sprocket,your final drive ratio will change, as you have already mentioned. My question is to maintain the final ratio have you changed or are planning to change the primary sprocket at the gear box end also? Otherwise, to my mind, the deliverable power will reduce.
Your thoughts Sir.
 
StoneFree

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#6 ·
AYEDEE said:
If you change the sprocket and have 70 teeth as compared to the original 80 tooth sprocket,your final drive ratio will change, as you have already mentioned. My question is to maintain the final ratio have you changed or are planning to change the primary sprocket at the gear box end also? Otherwise, to my mind, the deliverable power will reduce.
Your thoughts Sir.
Click to expand...
The only issue is related to the increased final drive ratio in first gear starting out but the 750 has more than enough power and with a six-speed gearbox the final drive doesn't make much difference. Also remember that my chopper will be considerably lighter than the stock 750 so the power-to-weight ratio is still going to be very good for the motorcycle.
 
Chirash Rupela

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#8 ·
Street 750 tyre upgrade

Guys,

Did anyone changed tyres on street 750 ?

I am fed up with the squealing sound of my MRF tyres everytime i brake. These are the same quality tyres which are on Bajaj pulsar bikes.*

Any suggestions, i was considering following :

Front :

Couple of options in 100/80-17*

1. IRC
2. Michelin Pilot Sport Radial
3. MRF Zapper
4. Pirelli Sport Demon

Rear:

MRF website shows Rear ZAPPER VYDE 150/70 - 15 TL. also available in 170

couldnt find any other option for rear.

what do you think?
 
StoneFree

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#9 ·
Chirash Rupela said:
Guys,

Did anyone changed tyres on street 750 ?
Click to expand...
I'm still waiting on my wheel manufacturer to finish development of rear wheels for the Street before selecting the actual tire. Also remember that if you change the tire circumference it requires a gearing change and/or a programmable speedometer.
 
W

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#11 ·
Hi All, to those whom took a change of existing size. Out of itchy backside, was checking around for my stock tyre to replace and to my horror, sole importer of Michelin, Pirelli do not bring in stock size. My quest to check on Shinko, Metzler, Avon, Bridgestone to also no avail. Await MRF tyre importer feedback if they do bring in.... Went to official Harley and check their price, WOW, 2.3 times more than outside market tyres !

2015 Harley XG750
Front - 100/80-17
Rear - 140/75-15

Seek member here if have changed one size larger, i.e. rear 140/90-15 etc etc without modifying the fender etc etc. hopefully would be able to find replacement for my tyres, as no intention of paying 2.3 times more for a Harley tyres which i think its still manufactured by Michelin.

Do also share if have upsize especially rear rims from 15 to 16 and what tyre size one is using without any modification.

Thanks All.
 
S

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#14 ·
[email protected] said:
Ok let me put it in simple words...
I was to replace rear tyre of street 750...

Original tyre ratio: 150/70-15 67H
My Proposed tyre ratio: 180/80-15
Click to expand...

One problem you over looked 15 inch bike wheel do not except 15 car tires 16 inch is the smallest it works for. If you wish to try it anyway this is how it works out.
https://www.tacomaworld.com/tirecalc?tires=150-70r15-180-80r15



Forum embed code:
150/70-15 180/80-15 Difference Diameter inches (mm) 23.27 (591) 26.34 (669) 3.07 (78) 13.2% Width inches (mm) 5.91 (150) 7.09 (180) 1.18 (30) 20% Circum. inches (mm) 73.1 (1856.68) 82.75 (2101.73) 9.65 (245.04) 13.2% Sidewall Height inches (mm) 4.13 (105) 5.67 (144) 1.54 (39) 37.1% Revolutions per mile (km) 866.79 (538.59) 765.73 (475.8) -101.06 (-62.8) -11.7%
 
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