That means your side wall will be 5% bigger mate..thats why when you go wider you normally drop your wall size ie 225.40 or 235.35...
On a saph with coilovers and the rear shit shields removed the front arches rolled et 32-35 id go 225.40 front and 245.35 rear...if your 4x4 you will have to be carefull as you will need the correct rolling radius back and front so will need to measure but if using the same make of tyres wont be far of with the above examples..


cheers danny