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2020 Mazda CX30 Soul Red Select AWD
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Discussion Starter #1
Does anyone know the factory Offset on the 18inch wheels?

Have never purchased winter wheels and tires before. Was wondering if 48 offset is going to work or not... That is the only size steel wheel tire rack has.
 

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2021 CX-30 GT AWD - Machine Grey Metallic
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Factory 18" wheel is 18 x 7, 5x114.3 bolt pattern, 67.1 hub bore, and a 45mm offset.

Keep in mind that the more positive the offset, the further inboard the wheel will sit, since the mounting face already starts outside the centreline of the wheel, and offset measures that distance from that face to wheel centre. As such, with a 48mm offset, the wheel will sit 3mm further inboard.
 

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Discussion Starter #3
Thank you!!!

Will 18 x 6.5 with 48mm offset work? I will be using the OEM tire size. Will be running without TPMS.
 

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2021 CX-30 GT AWD - Machine Grey Metallic
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OEM tires are 215/55/18 in size. For a 6.5" wheel, the minimum recommended tire width is 185 and the maximum is 215, with 195 or 205 being optimal. As such, your 215 tires will fit on a 6.5" wheel. The offset difference is quite small, so I cannot see that interfering with any suspension or bodywork, though the wheels will look a bit more tucked in.
 

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Discussion Starter #5
Thank you so much for the information!

Not concerned about the look... Just don't want to wear or put added strain on the wheel bearings.
 

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No worries - though I believe with no TPMS sensors you will be seeing a warning light and on these newer Mazdas there's no way to switch it off.
 

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2020 Mazda CX30 Soul Red Select AWD
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Discussion Starter #7
I am hoping it is a warning light I can cancel out each drive. I am already spending almost a grand I really don't want to spend another 400.
 

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I have the winter tires off my old CX5, 225/65R17, anyone know if I'd be ok to put them on my CX30 215/55R18 without creating a problem?
 

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I have the winter tires off my old CX5, 225/65R17, anyone know if I'd be ok to put them on my CX30 215/55R18 without creating a problem?
A 225/65R17 has an overall diameter of 28.5", while the stock 215/55R18 tires are 27.3". Unfortunately, that represents a 4.4% increase, which is well out of the recommended maximum deviation of +/-3%. If you want to keep the CX-5 17" wheels and put new winter tires on them (and sell the old ones), I would recommend a 215/60R17, which is only a 0.4% decrease from OEM, and lots of popular winter tires are available in that size.
 

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hi guys, i am looking to put some used mags on my cx-30.. is it possible for my to put on almost any mazda used mags? Do i really have to be carefull with offset if its some mazda original mags ? thank you for your help. My tire are 215/60R17 xl ( GS model)
 

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hi guys, i am looking to put some used mags on my cx-30.. is it possible for my to put on almost any mazda used mags? Do i really have to be carefull with offset if its some mazda original mags ? thank you for your help. My tire are 215/60R17 xl ( GS model)
Many Mazda wheels have the exact same specs (aside from diameter and width of course). Same 5x114.3 bolt pattern, same +45 offset, same 67.1 bore diameter. For a 215 width tire, the minimum recommended wheel width is 6.5", with 7" or 7.5" being optimal.
 
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