Aggressive offset and spacer calculation help needed
#1
Aggressive offset and spacer calculation help needed
When I bought my Enkei RPF1 wheels I had no access to a fender rolling machine, neither did I know anyone who could do the job without messing up my fenders so I played safe and bought wheels which had the max possible width and offset without needing a fender roll.
Fronts: 18x9.5 +38
Rears: 18x10 +38
Now, I have access to a fender roller and I am planning to have a more aggressive looking setup. Looking at others' pics in the forum something like F: 18x10 +38 and R: 18x10 +18 would look good so I am planning to convert my setup to something similar by using spacers but I just need the experts to doublecheck my calculations.
According to my calculations to bring out 18x9.5 +38 like 18x10 +38, I'd need 5mm spacers at the front and to bring 18x10 +38 out like 18x10 +18, I'd need 20mm spacers at the back, is this correct?
As for tyre choice I'll go with 255/35/18 (diameter: 25.02) at the back but not sure about the fronts for flush fitment. My options are:
225/40/18 (25.08, perfect match diameter but too much stretch)
235/40/18 (25.40)
245/35/18 (24.75)
When tyres stretch, do their overall diameter decrease? If yes, then 235/40 seems to be the perfect match.
My final question is where can I get some ARP studs and quality lightweight (magnesium, titanium etc.) spacers suitable for rx7 centre bore? Do I need longer studs for 5mm spacers at the front?
Thanks in advance,
Fronts: 18x9.5 +38
Rears: 18x10 +38
Now, I have access to a fender roller and I am planning to have a more aggressive looking setup. Looking at others' pics in the forum something like F: 18x10 +38 and R: 18x10 +18 would look good so I am planning to convert my setup to something similar by using spacers but I just need the experts to doublecheck my calculations.
According to my calculations to bring out 18x9.5 +38 like 18x10 +38, I'd need 5mm spacers at the front and to bring 18x10 +38 out like 18x10 +18, I'd need 20mm spacers at the back, is this correct?
As for tyre choice I'll go with 255/35/18 (diameter: 25.02) at the back but not sure about the fronts for flush fitment. My options are:
225/40/18 (25.08, perfect match diameter but too much stretch)
235/40/18 (25.40)
245/35/18 (24.75)
When tyres stretch, do their overall diameter decrease? If yes, then 235/40 seems to be the perfect match.
My final question is where can I get some ARP studs and quality lightweight (magnesium, titanium etc.) spacers suitable for rx7 centre bore? Do I need longer studs for 5mm spacers at the front?
Thanks in advance,
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MILOS7
3rd Generation Specific (1993-2002)
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08-19-15 07:25 AM