Pirello to Bridgestone (review)
jorhett at fastlizardracing.com
Mon Aug 18 23:32:03 PDT 2008
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 tires.
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 tires?
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 laps).
* 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
* 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
* 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
Jo Rhett / velociRaptor Racing
#553 WERA / AFM
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