Autocross Mods

I haven't added an extra inverter radiator to my '15 yet. Is it absolutely necessary, no. But anything that can be done to keep temps down is a plus. I have used Hawk HPS pads before and still have the ones from my '11 Prius. I'm still undecided if I'm going to use them. Since you're going to be in a Street Prepared (FSP) or even SMF (Street Modified FWD ) you could use a racing compound tire. If you have a seperate set of wheels this is the route I would go. The Hankook Z214 is a very good choice. If it's a tire you're going to be driving on the street as well then either the Bridgestone RE-71R (which are on backorder ) or what I'm using, Dunlop Direzza ZII Star Spec. I recommend a 205/50/15 if you're going to have them mounted on a set of dedicated autox wheels. That size is slightly smaller diameter which aids in acceleration and is lighter.

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Haha no problem. I hope you get out there soon. Let me know if you have any other questions.

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Tires came in today so I took a few minutes to mount them. Grip is goooooooood.

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Haha yep, 15 years with Toyota I've mounted a few tires.

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Yes sir these are the Dunlops. After originally ordering Bridgestones the first week of April and the ETA being pushed out to the 2nd week of May I had them switch my order. Here's how the 2 sizes compare.


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I have no experience with any of those personally. I know the Dunlops I purchased are the revised version of those they tested. That article also appears to be from 2009. Are you wanting something for everyday use or just autox?

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Then I'd definitely recommend Hankook Z214's for sticky....

Installed my Mishimoto oil catch can today. I have a slight vacuum leak somewhere that I'll trace down tomorrow but otherwise happy with the install.

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I'd say they are beneficial even for everyday driving. Considering one mountain I climb going to work the engine stays over 4k RPM for 5 miles and autocross duty I picked one up.

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Well got the alignment dialed in for Sunday's autox. Managed to get -1.8 degrees camber on the front. Adjusted toe to just a hair under 1/4 degree negative (out). Also checked my oil catch can since it's been nearly 500 miles.

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Loaded and ready for its first autox. Rolling out at 5am, looks like it may be a rainy one.
View attachment 109573

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I could give you the specs and the P/N for the camber bolts I used for the alignment. I actually thought about doing a little write up on the catch can though.

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Headed that way in about an hour. I'll keep you updated.

This helps with rotation once in the corner. I did have a Rav4 front bar on the car but you're only allowed one bar upgrade in my class. Since I added the TRD rear sway bar I swapped the front back to the OE bar.

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Not too bad for the first outing with this car. Street tires grip a bit different than full on R-comps so I have a bit of a learning curve. I over drove the car. Could have been a bit smoother in the later sections of the course. Next event is a double header on June 18th and 19th in Danville, Va at the airport. Completely different surface and more open.

And.....41.5mpg for the day, including 5 autox runs.

1.352 seconds behind first place car in my class.

http://www.brr-scca.org/Results/20160501.htm







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