So I run Sumitomo HTR Z IIIs. I've been happy with them.

I went to a higher-end alignment shop that seems to specialize in Porsches because Just Tires is a bunch of thieves.

The guy there said that these tires were narrower than the Michelins of the same size. That didn't make any sense to me--isn't the "275" the width in millimeters? It's not like saying "size 6", it's an actual measurement. Or so I thought.

He pulled some 295 Advans and compared them--they sure did look to be a bit over an inch wider.

Uh, what's up with this? I've NEVER heard this. And I'm a little worried cuz I just recommended a friend get a set for the rear of his car. He'll be running the Sumis in the back and RE40s in the front (350z). I hope his handling isn't completely shot to hell.

 

Tire widths do vary from one brand to another. Some tire manufacturers have several tires in the same model and indicated size that vary greatly.

 

exactly what W.E. said.....no model tire is the same size...there are variations with all

 

BTW, running different brands front and rear is a BIG no no IMO

 

Yeah I know...he wanted something less expensive and runs through rears like he's going out of style, so he went with the lower priced Sumis. They'll probably only last like 4k miles anyways

 

But are the differences really that significant?

 

i've seen up to an 1-2" difference on tires the same "size"