Wider rear tyre?

the standard rear tyre on my sv is 160. there is ample room to take a 170, but would it be ok on the standard rim and be of any benifit at all.

[TSM]

dont bother

yeh, that answers the question pretty comprehensively

when i bought my bike i came with a 170 on it so i know no diffrence

[TSM]

non standard size tyre on rim could cause insurance issue, bike is not designed for a 170, it will turn slower
why bother, even bikes of yesteryear that had 190 are nowerdays 180

Originally Posted by TSM

non standard size tyre on rim could cause insurance issue, bike is not designed for a 170, it will turn slower
why bother, even bikes of yesteryear that had 190 are nowerdays 180

thats better, thanks

[yorkie_chris]

Originally Posted by bald git

there is ample room to take a 170,

no there isn't

You don't pay any more for a 160 tyre, don't c*ck up your handling and risk invalidating your insurance! A 170 will curve more than it's meant to if crammed on a 160 rim.

http://www.avon-tyres.co.uk/motorcycle/storm-2-ultra not having a go at any one but check out this chart from avon. 99 sv has rear rim size of 17 x MT 4.5, 160 and 170 both fit this rim.[ 170 will fit rim size 4.25 to 5.5, recomended rim size 4.5 in ],so not crammed, aspect ratio of both tyres have 60, and total height of 6.8 in, so no height of bike increase or decrease. as to width, + 2mm. there is clearance of 20 mm + both sides of my current 160 avon storm at swing arm, 20mm + at torque arm, 15mm clearance at chain. so chris, i believe there is clearance, unless your seeing something i,m not.

The Height of the profile i.e. in this case 60 is the % of the width. So 60% of 170mm is bigger than 60% of 160.

Fitting 170 tyre in place of a 160 would raise the height further as it is being pinched more.

In theory raising the rear of your bike can make it turn in quicker, but fitting a bigger would add more unsprung weight and increase the rotating mass (which is far greater than static mass), slowing turn in, will also need more energy the brake and accelerate.

In reality, you may not notice any difference. The sv runs well on a 160 so I wouldn't bother. As for your insurance, speak to them and at the least tell them about all the mods on your bike and make sure they put it on your policy schedule.