How Big Can A R32 Gtr Go In 19 Inch Tyres?

[Sydneyactionman]

I've looked around the fourm but want some fresh answers?

How big I can go on the rear of my R32 GTR with standard suspension?

I need to raise the rear of my car by about 20mm so I can have it transported on a car carrier.

I currently have Apec Apache Wheels with 245/35/19 fitted & figured I can raise the rear by going up in tyre profile? I was going to buy a couple of 255/55/19 as I was offered some dirt cheap but...

I called Bob jane & they said a 255/55/19 tyre is 108mm taller the 245/35/19 currently fitted so I figure that's 54mm bottom & top right?

I only have a 40mm clearance between my guard & the 245/35/19 tyres currently fitted so I don't think 255/55/19 will fit?

Any ideas?

I was thinking maybe 255/45/19 would they fit?