60 or 70 profile front tyre

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eamonn
Posts: 148
Joined: Fri Nov 30, 2012 11:50 am
Location: Acton and Colchester

60 or 70 profile front tyre

Post by eamonn »

Just noticed my front tyre is 120/17 / 60, should be 70 profile, havent noticed any real difference when riding , is this small difference noticeable on normal commuting riding ?
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Dazza2910
Posts: 134
Joined: Sat Nov 10, 2018 10:55 am
Location: Edinburgh

Re: 60 or 70 profile front tyre

Post by Dazza2910 »

Should definitely be a 120/70x17.

The 60 will have a slightly lower profile. 60% of 120 instead of 70%.

I'd stick with a 70, but if you're not having any issues, it can probably wait until you next change it.

Only issue I can think is if you ever had an incident and an insurance assessor noticed it wasn't the right size.
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8541Hawk
Posts: 2066
Joined: Sat Jul 21, 2012 5:21 am
Location: Bella Vista, AR

Re: 60 or 70 profile front tyre

Post by 8541Hawk »

120/60's make for better turn in but a harsher ride due to the shorter sidewall. This can result in a push, chatter during braking or mid-corner chatter. Some bikes and setups are more affected than others. F2's will push the front when ridden hard with a 120/60.

When ridden hard, the 120/70 is the better, more compliant tire. However, many riders will hardly notice the difference until they really start using the front. 120/60’s tend to be cheaper than 120/70’s so unless you or your bike are sensitive to the use of a 120/60, it can be a good alternative especially for someone just starting out, or just having fun. :thumbup:
Loud pipes don't save lives, knowing how to ride your bike will save your life.
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