Originally Posted by on the road
Big453 I was under the impression that the 453 prime had 4.5 x 15 front rims. My front Continental are in good shape with only 23,000 but the rear are worn down past the wear marks. I found the Continental 185/60r15 on sale for 73.00 so I was thinking of replacing the rear and run the front a few more miles. That is the same size that came on the rear. If I have 5 x 15 on front I would consider putting the same size all around. Would that affect the anti skid or whatever it is called?
The 451 had 4.5Jx15 ET23.5 front rims with 155/60R15 tires and 5.5Jx15 ET22 rear rims with 175/55R15 tires.
4.5Jx15 ET23.5 PCD:3x112mm Central bore:57.1mm
5.5Jx15 ET22 PCD:3x112mm Central bore:57.1mm
I have tried using the same size tires all round on an early Smart pre-2003. These early cars didn't have modern ESP electronics. In the dry they were fine, as the front camber would cause the car to understeer when on the limit. However, in the wet or other slippery conditions, it would be possible to lose the back end particularly in an emergency situation. The ForTwo is a short wheelbase car with a rear weight bias, so losing the back end can happen very suddenly. Modern ESP electronics should brake individual wheels to prevent this happening.
If you want to use the same size tires all round on the 453, you could use the standard rims, or four front rims, or four rear rims. 185/60R15 tires will fit the 5Jx15 front rims and the 5.5Jx15 rear rims. My preference would be to use the original rims ie. 5Jx15 ET32 front rims and 5.5Jx15 ET42 rear rims, or rims from the Renault Twingo 2014 onwards car which has 5Jx15 ET38 front rims and 5.5Jx15 ET36 rear rims. By using Renault Twingo 2014 onwards rims, you are moving each front wheel 6mm inwards and each rear wheel 6mm outwards in comparison to the standard 453 rims, due to the difference offsets. ET stands for Einpress Tiefe which is a German word and means offset. The Renault Twingo 2014 onwards rims are almost identical to the 453 rims except that they are black instead of silver and have difference offsets.
Renault Twingo 2014 onwards front rim 5Jx15 ET38
Renault Twingo 2014 onwards rear rim 5.5Jx15 ET36
The Smart Roadster 452 used the same size tires all round, but always used front rims that were 0.5" to 1" narrow than the rear rims. For this reason, I would be inclined to use 5" front rims and 5.5" rear rims if using the same size tires all round, rather than the same width rims all round.