Riceburner
Well-known member
Can you run a 35mm positive offset rim on a car that is OEM 40mm offset....if the tire + rim combo doesn't touch anything? What potential problems could there be?
Rim positive offset question for the car ppl
- Thread starter Riceburner
- Start date
skapan
Well-known member
Depends a bit on the tire profile and rim width - they are the same width, right? If the 35 offset rim is wider it will be closer to the suspension by 5mm plus half of the extra width. For a front drive car it's probably the struts that will rub first, so check for space with weight on the wheel. They might rub a bit when turning tight, but just don't turn so much. Probably OK, but you know how that goes...
You have it backwards. A lower offset will poke (rim+tire will be moved outwards closer to the fender).
If it doesn't touch anything it poses no problem whatsoever.
For any other musings:
http://www.rimsntires.com/specspro.jsp
For any other musings:
http://www.rimsntires.com/specspro.jsp
MarcosSantiago
Well-known member
I just got a set of rims from the Tire Rack.
They said that these will fit, so I am sure they are right.
Just to give you an idea, it is somewhat similar to your situation, I am moving to a lower offset.
The OEM offset is 52.5 mm, the new rim's offset is 45 mm.
They said that these will fit, so I am sure they are right.
Just to give you an idea, it is somewhat similar to your situation, I am moving to a lower offset.
The OEM offset is 52.5 mm, the new rim's offset is 45 mm.
Riceburner
Well-known member
That sounds right. So as long as it clears the fender and brake components it's fine.
Yep same scenario. So a 5mm less positive should be nothing. Old rims are 35, new car OEM is 40.
If it's not touching and the difference is negligible, it'll be fine. If you make big changes and still have no touching you can still have problems with handling, suspension, wheel bearings, etc.
And for all those saying to just enter it into some computer system, it won't tell you necessarily.
For example, almost everyone will tell you 15" rims won't fit on a 2009+ WRX. My 2009 WRX had 15" wheels. Those wheels also fit my Porsche 944, which specs a completely different wheel in almost every way except diameter. Although they were custom made.
I'd like to put 15's on my Outlander but I can't find any thing that says anything other than 16+ will fit.
And for all those saying to just enter it into some computer system, it won't tell you necessarily.
For example, almost everyone will tell you 15" rims won't fit on a 2009+ WRX. My 2009 WRX had 15" wheels. Those wheels also fit my Porsche 944, which specs a completely different wheel in almost every way except diameter. Although they were custom made.
I'd like to put 15's on my Outlander but I can't find any thing that says anything other than 16+ will fit.
Virtually every car runs negative offset.
Riceburner
Well-known member
Nope, almost the opposite I think. Almost every FWD and newer RWD runs positive offset. Those big rims with a deep set rim are negative offset. Any with the face of the rim close to the outside is a positive offset.
Negative offset:
Positive offset:
Last edited:
Wrong.
Nope, almost the opposite I think. Almost every FWD and newer RWD runs positive offset. Those big rims with a deep set rim are negative offset. Any with the face of the rim close to the outside is a positive offset.
Negative offset:
Positive offset:
Right.
