I have a 2010 C4S cab and looking for winter wheels and tires. My tire rack specs are
Front
235/35/R19

Rear
305/30/R19

Someone is selling a set of winter wheels and tires from a 2016 C4
Front
235/40/R19

Rear
295/35/R19

Do you think they will fit?

 

Folks generally go down a size for winter setup - 18" from 19". But if it's a killer deal, then why not - you'll still get the advantage of the right tyres.

On the fronts, the overall wheel+tyre diameter will be going up by almost 1 inch (23.5 mm) - need to make sure it doesn't rub.

The other, more important factor is the wheel offsets - what are your current offsets and what the 991 wheel offsets => that will make a difference of how far spaced out or in the wheels will be.
Too far in or out can result in rubbing.

 

Thanks!

 

they will definitely fit BUT you need 7mm spacers up front or the 240 tire will rub on the strut base. Ask me how I know

I have a winter set of Stark 19” with Sotos on my 997.1 C4S in these exact sizes from a 991.2 C4S

my summers are HRE 19’s with the same specs you listed from Tire Rack.

 

Thanks!