Rear tyre spec change - Harley Davidson Street Forum - Street 500 and 750
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post #1 of 3 Old 02-24-2016, 02:50 PM Thread Starter
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Rear tyre spec change

The OEM spec or the rear tyre is 150/70 for a 15" rim. Would like to know if modifications need to be made for a 170/70 size on the same rim.

If no mod is required.. Would this be advisable.

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post #2 of 3 Old 03-11-2016, 02:18 PM
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Yes u can put 180/70 as well without any mod requirement

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post #3 of 3 Old 03-12-2016, 06:29 AM
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It Will throw the Speedometer off. I put bigger tires on a truck. My Speedo read slower than I was going. And because of the Larger Diameter, Will lower the Rpms slightly. If you do it, Have a another bike ride with to check the Speedo. Or use a GPS.

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