hello all i am looking at replacing my smaller soft top with a bmw 3 series. do they tow ok ? and will i have to upgrade the cooling for the auto box ? this is the sort of car i been looking at http://www4.autotrader.co.uk/classified/advert/201403152536241/sort/locasc/usedcars/model/3_series/make/bmw/body-type/convertible/onesearchad/used%2Cnearlynew%2Cnew/transmission/automatic/radius/1500/page/1/postcode/ng200jj?logcode=p what sort of things should i be looking out for and asking when going to see them Thanks Ryan smith