Tire size recommendation for 18x10 rear
#61
there are 3 primary tarmac driving world w/ wildly different needs in each.
world 1 is summer street
world 2 is big track
world 3 is A/X
street is most forgiving there is a huge variation it what is ok
big track tends to want neutral to very minor oversteer at speed which will be a major understeerer at A/X speeds
A/X tends to want oversteer which will be pretty uncomfortable at track speeds
world 1 is summer street
world 2 is big track
world 3 is A/X
street is most forgiving there is a huge variation it what is ok
big track tends to want neutral to very minor oversteer at speed which will be a major understeerer at A/X speeds
A/X tends to want oversteer which will be pretty uncomfortable at track speeds
#62
Rennlist Member
there are 3 primary tarmac driving world w/ wildly different needs in each.
world 1 is summer street
world 2 is big track
world 3 is A/X
street is most forgiving there is a huge variation it what is ok
big track tends to want neutral to very minor oversteer at speed which will be a major understeerer at A/X speeds
A/X tends to want oversteer which will be pretty uncomfortable at track speeds
world 1 is summer street
world 2 is big track
world 3 is A/X
street is most forgiving there is a huge variation it what is ok
big track tends to want neutral to very minor oversteer at speed which will be a major understeerer at A/X speeds
A/X tends to want oversteer which will be pretty uncomfortable at track speeds
Just picked up a set of Fikse FM10's spec' as follows:
18x8 ET50
18x10 ET60
225, 265 or should I push the envelope to 235, 275 or 285s? Car is lowered on kw v3's
#63
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Location: Kansas City
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I will say that for World 3 one does not want a 225/275 combo as there is an enormous amount of understeer and nowhere near enough power to overcome the rear traction and help it turn.
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
Next year will see me run 245/275 RE-71s, or a Corvette because they just effin work.
Christian
'95 Carrera
Thanks J. Douglas Patterson/Patterson Prints LLP for the astounding camera work!
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
Next year will see me run 245/275 RE-71s, or a Corvette because they just effin work.
Christian
'95 Carrera
Thanks J. Douglas Patterson/Patterson Prints LLP for the astounding camera work!
#66
if you want a meatier look 235/40 & 275/30, cost is a little worse gearing
if you want a tad better gearing 235/40 & 285/30
as I said world 1 has a wide range of ok
#67
I will say that for World 3 one does not want a 225/275 combo as there is an enormous amount of understeer and nowhere near enough power to overcome the rear traction and help it turn.
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
Next year will see me run 245/275 RE-71s, or a Corvette because they just effin work.
Christian
'95 Carrera
Thanks J. Douglas Patterson/Patterson Prints LLP for the astounding camera work!
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
Next year will see me run 245/275 RE-71s, or a Corvette because they just effin work.
Christian
'95 Carrera
Thanks J. Douglas Patterson/Patterson Prints LLP for the astounding camera work!
#68
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I will say that for World 3 one does not want a 225/275 combo as there is an enormous amount of understeer and nowhere near enough power to overcome the rear traction and help it turn.
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
My setup was Bilstein B8s and M030 springs with RE-11As on Carrera IIIs in 8/10x18. Feels great at a DE, induces unhealthy frustration levels trying to backside a tight slalom
#69
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Join Date: Mar 2010
Location: Kansas City
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That remains a perennial struggle of mine, keeping my vision focused far enough ahead to plan rather than react.
Christian
'95 Carrera
#70
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Where you look is where you'll go. Also, it helps to set up at least two corners in advance, especially for any corner that leads to a long straight (to get on the power as early as possible).
#71
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The problem is, being busy you often forget those things. I usually forget to breath and have to remind myself mid-run, and we run long 70+ second courses. It's easier when instructing, I remember and yell on every run
#72
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Long straights? We don't have no stinking long straights (to almost quote Mel Brooks).
#73
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Well, I guess it's relative. When I used to autocross (in the NSA's parking lot, for crying out loud. No more.), the organizers made the course with decent straights where you could floor it for five seconds or more.
#74
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One secret I've been tough early on is that at autocross, if you find or make a long enough curve, that's your acceleration line. So now I'm looking for long curves, whether they are there or whether I can create them. To me, that's actually one of the largest differences between autocross and track.
#75
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good info! thanks Bill. So does 225/40 & 265/35 x18 or 235/40 & 285/30 maintain better gearing?
Last edited by GBX; 12-24-2016 at 09:19 AM.