GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

200tw tires for Track use

SouthFL_Mk7.5

Autocross Champion
Location
South Florida
Car(s)
2019 GTI S
51D09E1A-C54F-414E-9149-C7F275A04CB3.jpeg


245 40 17 V730 vs 225 45 17 PZero

The Kumho make the PZero look like a skinny Touring tire!

Edit: fixed Kumho aspect ratio
 
Last edited:

mrmatto

Autocross Champion
Location
Jacksonville, FL
Car(s)
2024 GTI DSG
Ready to pull the trigger on some RT660's... Should I go 245/45-17 or 235/45-17? These things run crazy wide and I don't want to rub under full compression. Stock ride height at -1.5* rear, -1.6* front, 17x8 +45mm wheels.
 

GTIfan99

Autocross Champion
Location
FL
Ready to pull the trigger on some RT660's... Should I go 245/45-17 or 235/45-17? These things run crazy wide and I don't want to rub under full compression. Stock ride height at -1.5* rear, -1.6* front, 17x8 +45mm wheels.
I'm running 255 660's with no rubbing and I'm lower 1.3 inches lower than you. Go 245 40 17
 

mrmatto

Autocross Champion
Location
Jacksonville, FL
Car(s)
2024 GTI DSG
I'm running 255 660's with no rubbing and I'm lower 1.3 inches lower than you. Go 245 40 17
I don't want to reduce my overall diameter since the DSG gears are so short already. 245 45 17 will be a little taller, but probably still OK?
 

GTIfan99

Autocross Champion
Location
FL
With 17 x 8, I'd still do 245 40 17, even with DSG. It's a 1mph difference. You don't even notice.

245 45 17 will feel really soft in the side wall with 8" wheels.

Just trust me. I wouldn't steer you wrong.
 

mrmatto

Autocross Champion
Location
Jacksonville, FL
Car(s)
2024 GTI DSG
With 17 x 8, I'd still do 245 40 17, even with DSG. It's a 1mph difference. You don't even notice.

245 45 17 will feel really soft in the side wall with 8" wheels.

Just trust me. I wouldn't steer you wrong.
Actually, interestingly enough, the RT660s in that size are even closer to stock size than I realized since they're oversized. .3" difference. 40 sidewall it is probably. Thanks
 
Last edited:

steddy2112

Go Kart Newbie
Location
Belcamp MD
Car(s)
2016 GTI SE
I dream one day of using R gears in my GTI transmission.

When I accidentallied my stock transmission I ground my brain to dust debating on going with the R box, I mean it's literally what VW does with the Clubsport S

Even made stickies at work with what my speeds would be at redline with 245/40/18s:
1673696093452.png



I should have done it. I wouldn't be on the hunt for more power out of an IS38 and all it basically does is move you up a gear

Bonus: it's less load overall on the output shaft so it's "harder to break" with a set of sticky tires and a grabby clutch

Back on topic, I've always been a fan of Dunlop Direzzas since the z2 and the z2 star spec

Ran the last two seasons with Z3's and was overheating them when getting consistent fast laps in and had a literal couple of grass discovery events lol

I know they're a little long in the tooth now, shit even the RE-71 has an update and Falken has copied someone's homework, but if I hadn't moved on to NT01s I'd probably would have stuck with Z3s.

I know the hankooks last long/deal with heat better and if you look at my tire choices, I love me some consistency and gladly trade off some overall time for less fall off, I have driven other people's cars with RS4s on them and was barely whelmed.

https://grassrootsmotorsports.com/articles/track-tire-buyers-guide/

^ great reference btw for this entire thread as they break down what a tires strength/weakness is vs going off raw lap time
 
Top