that code appears to be for one of the o"2 -- lambda sensors. I had the same thing and it did cause the vsc and trac light to come on.
it is extremely unlikely that it has anything to do with the humming though
fronts are 8.5j wheels are wider at the rear 10j but im still running 245's on them with a little stretch.. 255 would be better but they will rub my arches
I don't think the 19 inch axe are staggered and should be 8.5j both front and rear.
alloys tend to come with the manufacturers recommended offsets for your car.. I run 5mm spacers and the wheels are flush with the bodywork
wind deflector visors are WELLvisor they attach with double sided tape and a few clips
https://www.wellvisors.net/index.php/window-deflectors/lexus/wellvisors-side-window-deflectors-lexus-gs300-gs350-gs430-gs450h-gs460-06-11-with-chrome-trim.html
springs are Tanabe DF210 https://www.autoanything.com/suspension-systems/tanabe-df210-lowering-springs
Wheels are axe ex20 https://axewheels.com/ex20-europe/ no arch rolling but the rear tyres are slightly stretched to clear (minimum size should be 255 and im running 245)
if you've got fat friends in the rear it could be a problem
Tpms was fitted by putting them on the wrong side of he rim I now have 2 tyre valves per wheel -- it all still works fine though and ive never had a problem
on my 2005 gs 430 im running with 245/30/20 I believe this was a size offered as standard option in the usa,
however if you live anywhere by speed bumps or badly potholed roads I would not recommend them
they do look cool as **** though (personal opinion -- your opinion may vary)
thanks for the reply. I may end up sticking with the ls 400 but I was fancying something just a little quicker and smaller and the gs seems to fit the bill
hi all. im currently thinking of buying gs 430 reg: gu05mgy and was wondering if anyone on here had previously owned this car or had any information on it. thanks