Looking to purchase new tires for my car. Probably going with Dunlop Sp Sport a2 or sp sport 5000's. Question: The factory size is 205/60/15, I am using the factory alloys. Can I put a mildly wider tire on the car ? I do not want anything extravagant bulging out of the wheel wells, rubbing, or looking odd. If so, what size would work ? I want to put more tire surface on the ground. Would that equate to a 55 series tire ? Everything is staying factory on the car....alloys....suspension...etc... Would my answer be 205/55/15 ? Would they fit without any complications ? I am not concerned about gas mileage.

Thanks

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1998 C230
1994 Infiniti J30T
1984 BMW 318i
1987 VW Golf GT
1975 Buick LeSabre Conv.