Mixing rear tyres?

[reaver]

Is it fine to mix rear tyres ( makes ..ect ) well see i got another nail in tyre today :mad: but its on its wear indicators anyways :o , now i got fitted a dunlop sport , near enough same tread pattern as the eagle f1's , so i got one eagle f1 and one dunlop sp on the rears. will i be be in a ditch in no time or what ? as this weather is making 'abuse' my car :D :D

p.s- i wasnt aware dunlop is goodyear :D