Running 305/30-20 in the rear for XKR-S?
#1
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I have XKR-S and considering getting 305/30-20 in the rear instead of stock 295/30-20. Can people with XKR-S comment if there are any rubbing issues when suspension is fully loaded or unloaded? I've seen several people on this forum with this setup and I appreciate your feedback.
Thanks
Thanks
#2
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BlueXKR-S (12-14-2017)
#3
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Cambo is correct. Use Tire Rack’s website to find a tire that has a wider tread width than what you currently have. P-zero tires have a wider tread than most. If you are not careful by going from a P-zero in 295 size to say a Bridgestone or Continental tire in 305 size you could actually end up with a narrower tread width. Tire Rack shows actual tread width and section sizes under the specifications tab. You will be amazed at the tread width difference for the “same” size tire.
#4
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Thanks, did not know that
Cambo is correct. Use Tire Rack’s website to find a tire that has a wider tread width than what you currently have. P-zero tires have a wider tread than most. If you are not careful by going from a P-zero in 295 size to say a Bridgestone or Continental tire in 305 size you could actually end up with a narrower tread width. Tire Rack shows actual tread width and section sizes under the specifications tab. You will be amazed at the tread width difference for the “same” size tire.
#5
#6
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I think you could get away with a 305 Pirelli and have a good look. As Cambo stated, I would not recommend a spacer and a wider tire. The original jag spec pirelli is 11.4" tread width.
Similar 295's are typically narrower than that.
Staying in a similar weight category you could hop onto a 305 Ferrari spec tire and have around 12"tread width. I wouldn't go much wider than that as I think you would you not have the ideal geometry for the tire to perform properly without stepping up to a wider rim.
The only compromise to this is, tire diameter, its going to be about an 1-1.4" which can compromise dynamics in the programming as this impacts rev/mile(km).
The other option is an Aston spec in 305 but then Pirelli spec tire is actually only 10" tread width.
I've done this with my XKR stepping up from a 285 to a 295, but I have not changed the XKR-S yet.
Similar 295's are typically narrower than that.
Staying in a similar weight category you could hop onto a 305 Ferrari spec tire and have around 12"tread width. I wouldn't go much wider than that as I think you would you not have the ideal geometry for the tire to perform properly without stepping up to a wider rim.
The only compromise to this is, tire diameter, its going to be about an 1-1.4" which can compromise dynamics in the programming as this impacts rev/mile(km).
The other option is an Aston spec in 305 but then Pirelli spec tire is actually only 10" tread width.
I've done this with my XKR stepping up from a 285 to a 295, but I have not changed the XKR-S yet.
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Panthro (12-16-2017)
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