I read this warning on the sunshade on my Toyota GLI 2011. It said, "Usage of anti theft lock on steering shaft and brake/clutch paddle may affect parts and car performance". I do not know the science behind it. Apparently it looks alright if you keep your wheels straight while parked and not make the lock pull the clutch paddle too hard. I could not find the logic behind it on internet as well. I will be thankful if someone could explain why it may affect the parts and performance. Thank you.