Everyone states on all these forums max is 137-139 depending on the engine variant except I’m currently only here looking because I’ve personally gotten mine to peg the speedometer at 140 and keep pulling. I was side by side with a buddy in his 2004 twin turbo Audi S4 wagon who said i passed him doing 155 in an uphill. I have a 1997 Lexus ES300 completely stock with 102k miles. And everyone talks about front end lift and handling but mine moved fine doing lane changes at atleast 145-150. It didn’t feel like the front end was lifting bad at all and it had good grip although my buddy did call me sketchy the next day so i don’t know how it looked on his end but I literally used turn signals and everything. Feel smooth and very surprising especially to come online and see everyone claiming 139 top speed. I wouldn’t recommend for everyone however the car I purchased is a very good example with lower milage and was well taken care of.
