A4 Predator Users!
Thread Starter
Joined: Mar 2002
Posts: 2,278
Likes: 1
From: Up in the Hills...Down there.
A4 Predator Users! Has anyone any advice on how they set up their predator program on a Stalled A4? For reference, I'm working on a 3800 Stalled 3.42 gear A4 Z, amd it has 305/35/18s on the rear. I also don't think it's correctly calibrating the speedo based on the actual tire size. Any tips, or personal experiences? TIA! 
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
^^^^ correct
You'll need to change the gear ratio and tire size
305/35/18 would be 305*.35 / 25.4 * 2 + 18 " tall so 26.4" tall whereas your stock tire was prolly a 245/50/16 which is a 25.65" tall tire, so you're almost an inch taller.. that'll put the speedo off alot
You'll need to change the gear ratio and tire size
305/35/18 would be 305*.35 / 25.4 * 2 + 18 " tall so 26.4" tall whereas your stock tire was prolly a 245/50/16 which is a 25.65" tall tire, so you're almost an inch taller.. that'll put the speedo off alot
