Run Michelin PSS in 265 30 / 19 and 235 35 / 19 on my Z4 rims are
close to same as you describe. wider than stock,
Specifications:Size: 19x8.5 Front / 19x9.5 Rear
Bolt Pattern: 5x120
Finish: Silver Machined Face
Offset: 35 Front / 38 Rear
Hubcentric: 72.6
No issues, should be fine.