what's the 240sx stock scrub radius?
what's the 240sx stock scrub radius?
Does anyone know the stock scrub radius of the 240sx, s13 in particular, although I would assume they are the same?
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Q45tech
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Scrub radius is the distance between where the SAI intersects the ground and the center of the tire. This distance must be exactly the same from side to side or the vehicle will pull strongly at all speeds. While included angle problems will affect the scrub radius, it is not the only thing that will affect it. Different wheels or tires from side to side will cause differences in scrub radius as well as a tire that is low on air. Positive scrub radius is when the tire contact patch is outside of the SAI pivot, while negative scrub radius is when the contact patch is inboard of the SAI pivot (front wheel drive vehicles usually have negative scrub radius.
Scrub radius is the distance between where the SAI intersects the ground and the center of the tire. This distance must be exactly the same from side to side or the vehicle will pull strongly at all speeds. While included angle problems will affect the scrub radius, it is not the only thing that will affect it. Different wheels or tires from side to side will cause differences in scrub radius as well as a tire that is low on air. Positive scrub radius is when the tire contact patch is outside of the SAI pivot, while negative scrub radius is when the contact patch is inboard of the SAI pivot (front wheel drive vehicles usually have negative scrub radius.
I'm pretty sure a taller wheel/tire assembly bring a positive scrub radius closer to the center of the contact patch. Also, the width wouldn't matter unless the offset is different then stock because the contact patch center does not change.
Yes, usually strut based cars do have positive scrub radius.
Yes, usually strut based cars do have positive scrub radius.
Quote »I'm pretty sure a taller wheel/tire assembly bring a positive scrub radius closer to the center of the contact patch. Also, the width wouldn't matter unless the offset is different then stock because the contact patch center does not change.
Yes, usually strut based cars do have positive scrub radius.[/quote]You're correct on all those points. When I talked about "bigger" I meant significantly wider - which will necessitate a lower offset due to the non-pizza cutter nature of the beefy wheels. I'm sure my scrub radius is going to be horrendous with 17x9" +15's up front. Oh well, I try to not think of nasty things like that. There's only so many ways to "optimize" your setup.
Yes, usually strut based cars do have positive scrub radius.[/quote]You're correct on all those points. When I talked about "bigger" I meant significantly wider - which will necessitate a lower offset due to the non-pizza cutter nature of the beefy wheels. I'm sure my scrub radius is going to be horrendous with 17x9" +15's up front. Oh well, I try to not think of nasty things like that. There's only so many ways to "optimize" your setup.