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Michael Rutter tests the GSX-R100R and BMW S100RR on closed roads on the Isle of Man in this month's Performance Bikes magazine.

Michael Rutter tests the GSX-R100R and BMW S100RR on closed roads on the Isle of Man in this month's Performance Bikes magazine.

Without any hint of exaggeration, I can guarantee you’ve never read a road test like our TT special Rutter Test. We’ve only just got over the fact we pulled it off ourselves: the two current best production sportsbikes, head to head on a closed TT course, ridden by a race winner, fully datalogged. Our regular Rutter Test at Donington already sets the sort of objective testing standard most magazines just can’t match: this time, we’ve raised the bar so high even we’ll struggle to hit the same peak again...

The TT is impressive anyway, but hours poring over the data gathered over a single lap on two ordinary road bikes (plus Michael’s Superstock BMW, as a race bike reference point) have revealed the magic of a proper fast lap in incredible detail. We didn’t know quite what to expect in terms of lap speeds and the ability of the bikes to handle severe punishment. It had Johnny and I simultaneously speculating/crapping ourselves while Rutter was out for each lap. We knew the bikes were good – but even the best race bikes can fail. The only concession we made to the effort was turning off the BMW’s heated grips...

There’s loads of other great stuff in the mag as normal, but I urge you: turn to p30 first, and tape your jaw shut to preventative a repetitive strain injury.

What's inside this issue

Isle of Man TT: Rutter 2017 test

Michael Rutter, a closed TT course to himself, and the two quickest road-legal sportsbikes. Welcome to the fastest road test you'll ever read...

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Mod Squad: Honda Fireblade '04-'07

How to make the underseat exhaust Blade handle better and go quicker.

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Our Bikes: MV Brutale

Italian bike is lovely on a race track. Then something drops off. Standard.

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