Pirello to Bridgestone (review)
jorhett at fastlizardracing.com
Tue Aug 19 09:31:10 PDT 2008
I'm not certain I can. With the GSXR front it's pretty low, and a
couple millimeters will probably have me dragging the belly pan. I'll
give it a try though.
On Aug 19, 2008, at 12:07 AM, Randy Grein wrote:
> Thanks for the review Jo. You might try dropping the front a couple
> of millimeters to get the front to track properly again - just an
> idea, I've not heard the Dunlops were prone to understeer but I've
> not considered them for about 4 years - since a friend wore out a
> front in 1 race.
> Randy Grein, WMRRA #41
> On Aug 18, 2008, at 11:32 PM, Jo Rhett wrote:
>> So Friday at Infineon was just me having fun, as I wasn't going to
>> race that weekend. All morning I was having trouble lighting up
>> the rear, nice fun slides out of every fast corner - 2, 3, 3a, 4,
>> bottom of the Carousel, you name it. Not surprising given that I
>> had 3 race days, 4 practice days and 3 track days on the set of
>> At lunch I replaced the soft/soft Pirellis with soft/medium
>> Bridgestones just to have some fun. I've got 5 trackdays before
>> the final WERA race, so why not fart around and see how I like the
>> I actually dropped out of the A Race group figuring that switching
>> tire brands would slow me up for the rest of the day. I went out
>> behind a moderately fast guy to pace myself and not get stupid, but
>> felt so good I passed him entering the Carousel and never saw him
>> again. My 4th lap on the new tires was 2/10ths of a second faster
>> than I did on the Pirellis all morning (as well as all succeeding
>> First impressions:
>> * the profile is different, and my first thought was that the tires
>> actually "rolled better". Especially on corner exit, the bike
>> seemed to be moving faster right away.
>> * On corner entry the tires held awesome and solid. I really had
>> to work to get the front to push, and I never successfully spun up
>> the rear.
>> * Just like the Pirellis, once I had turned in the bike was stable
>> and solid, completely reassuring.
>> However, it wasn't all good. My perfect suspension from the morning
>> was gone.
>> * The bike seesawed mid-corner (fixed by adding rebound to the
>> front and taking some out of the rear)
>> * The front under shuddered under hard braking, fixed by adding
>> rebound to the front but it came back as soon as I went faster again.
>> * The tires exhibit the Dunlop "drift". Unless you push the
>> front, a Pirelli will exit the corner *exactly* where you think it
>> should. The Bridgestones exhibit the Dunlop Drift where you find
>> yourself just a foot wider than you expected exiting the corner,
>> but you didn't push the front. The whole bike just ... drifts a
>> bit. I hated this on the Dunlops (which is why I went to Pirelli
>> in the first place) but this appears to be evident in the
>> Bridgestones too. *shrug* For now I'm just riding it.
>> Next stop: Miller Motorsports Park, Utah. I'm returning after a
>> fairly successful weekend on Pirellis there, we'll see how the
>> Batlax holds up.
>> Jo Rhett / velociRaptor Racing
>> #553 WERA / AFM
Jo Rhett / velociRaptor Racing
#553 WERA / AFM
More information about the SV650