[NycLambo]

Can I run 305/30/19 in the rear on stock wheels? or will this hurt the clutch?

Should I just stick with the factory recommended 295/30/19?

 

[Jason B]

Yep if you are rwd converted, no issue, but if you are AWD I would advise against it probably

 

[lamboperth]

FWIW, I have run 305x30x19 on the rear with 235x35x19 on front on both LP560-4's for over 50,000 miles and no differential problems. The difference in rolling radius between the front and rear tyres is within the 4% difference limit. Tyres used are the Toyo R888, Michelin Pilot Super Sport and Nitto Invo.

cheers,
john

 

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The visco type AWD system on the pre-LP cars is sensitive to tire dimensions. My G had a boiled visco clutch when I bought it due to wrong tire dimensions 😬
So I agree with Jason.