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      12-07-2019, 09:49 AM   #10760
rhyary
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Drives: 2013 M3
Join Date: May 2015
Location: Albany, NY

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Some tires and camber conclusions from my 2019 and projections to 2020.

If you followed my posts here, you know I went through lots of configurations, much to the chagrin of forum members. Here are some learning lessons and implications to the 2020 season. Advice and comments are welcomed.

The season was mostly done using -3.0 front camber and -2.0 on the rear. I don't have useful info on the rear. It was on constant 295/30/19 with all tires experiments

The front saw four sizes
235/35/19 slick RR
265/35/19 slick R7
265/30/19 100/200 type tires R888R, ADOR8, PS4S
275/30/19 road/rain tires (say PS4S or similar)

Some of the above are more 2017-18. Of interest in 2019 are two sizes - 235 and 265 /35

The 235/35 RR are SIGNIFICANT cheaper and the delta between the RR and R7/A7 is $600.

In 2019 I have 14 x 20 min sessions in two days.
7 per day

Neither the 235 nor the 265 were able to finish 14 sessions on pace below 1:40. Above 1:40 there is not real issue.

The 235 corded the INSIDE after 10 x 20min session. swapping sides coded both front

The 265 coded the OUTSIDE after 10 x 20 sessions.

both tires on -3.0 could not finish two days on pace.

So 2020 I plan to start on -2.5 front camber and RR 235. Only one reason. cheaper.

I get best time on that, and depending on finance, I will switch to 265 and -3.5 and test.

My goal is to finish two day 14 x 20m on either set at pace sub 1:40

For the record, my best time with 235 RR is 1:37.2 and best time on 265 is 1:35.7.

On the R7 265, I did multiple 1:36 and best accomplishment is 1:36.1 with traction control off.
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