ok i got some 255/55/18 tires on my rx400h wheels that i put on my rx300 and the back tires are rubbing ever so slightly. i think i need to get some spacers for the back, mebbe 2 or 3mm? what i wanna know is is there any difference in spacers? specific brands i should avoid or you would recommend? any insight would be great...

 

i got a 5mm spacer and my tires now clear the rear strut...just barely, tho...i went and picked up the h&r joints and dude said i didn't need to extend the bolts for 5mm but he says i prolly shoulda got a 10mm for add'l clearance. it's all good now but inretrospect, i think i shoulda just gotten like some 245/50/18 or 235/55/18 tires instead...