fire1226

Sorry for the repost.I Would like to know if someone could tell me if grooved rotors on an RX-350 would cause frontend vibration at 52 or 57 mph?.I have no vibration when the brakes are applied.I have new Michelin V-rated tires,alignment,and balance.I had a road force balance completed which checked out the original wheels and Bridgestone tires.I had the vibration then and still have it now.

veleno

iTrader: (3)

Have you brought it in to the dealership to see if they can diagnose the problem?

Grooved rotors? Not sure what that is actually but if I had to guess, do you mean your rotors are not smooth but grooved (probably due to wear and tear or worn out pads, etc)? If it is then I doubt it causes the vibrations.

I'd have the dealer check it out.

fire1226

I took my 2007 Rx 350 into Lexus for an evaluation.

After several hours and constant contact with the service tech.

It was discovered that the wrong transmission fluid may have been added during one of my previous services.

This service was done at one of the independent oil changing locations some time ago.

Lexus contacted the oil changing location to find out the type of fluid they used in my RX and was told it was a universal fluid designed to be used in that type of transmission.It takes a certain type of transmission fluid for the newer type transmissions in the newer model RX . I had a complete transmission service at Lexus and sent on my way. I hope this resolves my frontend vibration at 52 and 57 mph.So far it seems to be working.

veleno

iTrader: (3)

First I heard of transmission fluid causing that, but if the fluid has already broken down then I can see it happening.