245/275

[The Radium King]

hi. looking to go wider front and back on my car. 18" wheels. currently running:

235/40 (10mm wider in front) and 265/35 rear (OEM).

pretty content with the balance this gives the car. I want more front tire, so thinking I should widen the rear also. I realise there are pros/cons to this, and hope to report back on any changes I experience with this setup (ie, diameter impact on gearing and torque, impact on power given need to turn bigger rubber, any changes to front/rear balance, etc.).

I am thinking the following:

245/35 and 275/30

concerns are fit, diameter vs OEM, and diameter variation front/rear (so as not to mess w abs). here's my analysis of diameters:

225/40 (25.1) 265/35 (25.3) OEM
235/40 (25.4) 265/35 (25.3) current
235/35 (24.5) 265/35 (25.3) 3.3%
235/35 (24.5) 265/30 (24.3)
-
245/35 (24.8) 275/30 (24.5) proposed
245/35 (24.8) 275/35 (25.6) 3.2%
245/40 (25.7) 275/35 (25.6) confirm front fit

the proposed size reduces diameter front and rear, keeps front/rear diameters within tolerance, and should fit (front w spacers - ET53 and 7 mm spacer).

anyone have any experience with these widths that they could share? am I on track w sidewall heights? thanks.