I've read multiple threads on winter tires and sizing and I'm left with a couple of questions that hopefully can be addressed by the Z brain trust.

I'm ordering a set of Blizzaks WS80's and alloy rims for my 2004 350Z and it's been suggested by multiple users on here to go with the all square setup of 225/55/17's. Obvious advantages re rotation and I like the notion of a slightly higher ride height re ground clearance. I was placing the order yesterday when the guy at the shop warned that the size up front is not OE and he couldn't guarantee fit and any potential rubbing etc. I get that this isn't the OE diameter up front (but a match for the rears). But I guess I want some assurance that these won't rub. He specifically warned that with snow tires and deep grooves you will get snow packed into the rubber which would make the additional height a bigger issue with clearance.

I don't blame the guy at the shop for doing his due diligence. He wasn't warning based on specific experience, just the notion that upsizing tire height *might* have an impact and he wouldn't make any guarantees.

Also, I understand that changing tire height will impact the speedometer, but do we know whether the speedo is measured from the front or the rear? If it's the rears then I'm good but if it's the front it would be nice to know so I can compensate accordingly.

Thanks in advance for any insight.

 

Hi new guy. Did you notice that there's a forum called "Wheels & Tires" for questions exactly like this?

 

Thanks for that... I see that now.

 

Stock suspension? You'll be fine clearance wise. Gonna look like the offroad package for the winter though

 

Yes, stock suspension. I'm okay with the raised look as safety is paramount here. Toronto winters suck.

 

You also posted this in the tire section, no need for duplicate posts