Pri zn\u00ed\u017een\u00ed tlaku sa pneumatika viac splo\u0161t\u00ed, zv\u00e4\u010d\u0161\u00ed kontaktn\u00fa plochu a auto sa do duny neprepad\u00e1. Aby pritom p\u00e4tka nezosko\u010dila z disku, pou\u017e\u00edvaj\u00fa sa beadlocky<\/strong> (mechanick\u00e9 \u201ez\u00e1mky\u201c r\u00e1fika). V piesku nefunguj\u00fa hrub\u00e9 kocky ako v blate. Sk\u00f4r pom\u00e1ha dez\u00e9n s ni\u017e\u0161\u00edmi blokmi a smerovan\u00edm, ktor\u00e9 vytv\u00e1ra jemn\u00fd \u201elopatkov\u00fd\u201c z\u00e1ber, aby sa guma zbyto\u010dne neprehrievala. Kostra a bo\u010dnice s\u00fa zosilnen\u00e9, preto\u017ee piesok s\u00edce vyzer\u00e1 m\u00e4kko, no pod n\u00edm sa m\u00f4\u017eu skr\u00fdva\u0165 ostr\u00e9 kamene. <\/p>\n\n\n\n Modern\u00e9 p\u00fa\u0161tne pneumatiky maj\u00fa zmes so samolepiacimi \u010dasticami. Ak sa prepichne, guma sa okolo diery sama zalep\u00ed a prejde 5000 km bez defektu.<\/p>\n\n\n\n V hlbokom m\u00ednuse be\u017en\u00e1 zmes r\u00fdchlo krehne. Preto sa pou\u017e\u00edvaj\u00fa zimn\u00e9, ve\u013emi m\u00e4kk\u00e9 zmesi<\/strong> a hust\u00e9 lamelovanie<\/strong>, teda drobn\u00e9 z\u00e1rezy, ktor\u00e9 sa zakusuj\u00fa do snehu a dr\u017eia smer. Na \u010distom \u013eade pom\u00e1haj\u00fa hroty<\/strong>, mal\u00e9 kovov\u00e9 \u010dapy pren\u00e1\u0161aj\u00face tlak do \u013eadu. <\/p>\n\n\n\n Expedi\u010dn\u00e9 aut\u00e1 na severe \u010dasto jazdia na obrovsk\u00fdch, \u0161irok\u00fdch pl\u00e1\u0161\u0165och pri ve\u013emi n\u00edzkom tlaku<\/strong>. Pneu sa rozvinie ako bal\u00f3n a pl\u00e1va po pra\u0161ane, no vy\u017eaduje to jemn\u00fa pr\u00e1cu s plynom, inak hroz\u00ed odtrhnutie p\u00e4tky. Pred jazdou po ve\u013ekom mraze sa pneumatiky nech\u00e1vaj\u00fa zohria\u0165 na gar\u00e1\u017eov\u00fa teplotu. Studen\u00fa, stvrdnut\u00fa gumu netreba n\u00e1sil\u00edm oh\u00fdba\u0165.<\/p>\n\n\n\n Jedna zimn\u00e1 pneumatika s hrotmi m\u00e1 100-400 mal\u00fdch kovov\u00fdch \u0161pendl\u00edkov (vo F\u00ednsku a\u017e 1000 ks), ktor\u00e9 sa pri\u013en\u00fa k \u013eadu ako lepidlo. V\u010faka tomu sa brzdn\u00e1 dr\u00e1ha skr\u00e1ti o 30-50% oproti hladkej gume<\/strong>. Na asfalte v\u0161ak hroty dr\u00e1\u017edia povrch a s\u00fa ileg\u00e1lne vo v\u00e4\u010d\u0161ine E\u00da kraj\u00edn (okrem \u0160v\u00e9dska, F\u00ednska v zime, \u010diasto\u010dne Est\u00f3nsko, Loty\u0161sko). Pou\u017e\u00edvaj\u00fa sa v arktick\u00fdch oblastiach alebo na do\u010dasn\u00fdch \u013eadov\u00fdch tratiach.<\/p>\n\n\n\n Na skal\u00e1ch nerozhoduje len vzor. K\u013e\u00fa\u010dov\u00e1 je bo\u010dnica<\/strong>, preto maj\u00fa tieto pl\u00e1\u0161te viac<\/strong> vrstiev kostry<\/strong> a \u010dasto aramidov\u00e9\/kevlarov\u00e9 v\u00fdstu\u017ee, ktor\u00e9 pridaj\u00fa odolnos\u0165 bez zbyto\u010dnej hmotnosti. <\/p>\n\n\n\n Jazd\u00ed sa na ni\u017e\u0161om tlaku, aby pneumatika doslova obopla kame\u0148 a vytvorila mechanick\u00fd grip. Tu op\u00e4\u0165 pom\u00e1haj\u00fa beadlocky, lebo dr\u017eia p\u00e4tku na mieste. <\/p>\n\n\n\n V takomto ter\u00e9ne priamy n\u00e1jazd ostrou hranou na pneu s vysok\u00fdm tlakom \u010dasto kon\u010d\u00ed rezom bo\u010dnice. Sk\u00fasenej\u0161\u00ed jazdci tlak pred \u00fasekom zn\u00ed\u017eia a hranu prech\u00e1dzaj\u00fa pomaly. Guma sa \u201erozleje\u201c a hranu prekryje bez po\u0161kodenia.<\/p>\n\n\n\n \u0160pecializovan\u00e9 pneumatiky na skaly maj\u00fa bo\u010dnice s 5 vrstvami, \u010do im d\u00e1va flexibilitu ako guma na \u017euva\u010dke: obopn\u00fa kame\u0148 bez prasknutia pri tlaku 4 psi (0,3 baru).<\/p>\n\n\n\n V blate vyhr\u00e1va samoo\u010distiaci dez\u00e9n pneumat\u00edk. Ter\u00e9nne pneumatiky<\/a> typu M\/T maj\u00fa ve\u013ek\u00e9 bloky \u010faleko od seba a \u0161irok\u00e9 dr\u00e1\u017eky, aby sa blato pri ot\u00e1\u010dan\u00ed vyhadzovalo von a vzor sa neupchal. <\/p>\n\n\n\n V\u00fdrazn\u00e9 ramenn\u00e9 bloky pom\u00e1haj\u00fa, ke\u010f sa opierate o okraj ko\u013eaje. S plynom treba citlivo: pr\u00edli\u0161 pomaly a dez\u00e9n sa upch\u00e1; pr\u00edli\u0161 r\u00fdchlo a vyhrabete jamu a strat\u00edte smer. Na rozdiel od piesku b\u00fdva tlak o nie\u010do vy\u0161\u0161\u00ed, aby si pneumatika v hlbokej ko\u013eaji udr\u017eala oporu a nedeformovala sa cez bo\u010dnicu.<\/p>\n\n\n\n V extr\u00e9moch sa \u010dasto rie\u0161i nielen tvar, ale aj h\u013abka dez\u00e9nu. V piesku a snehu pom\u00f4\u017ee dlh\u0161\u00ed z\u00e1ber lamiel a dr\u00e1\u017eok, v blate je k\u013e\u00fa\u010dov\u00e1 h\u013abka hlavn\u00fdch dr\u00e1\u017eok a odstup blokov. T\u00e1 rozhoduje o tom, \u010di sa pneu vy\u010dist\u00ed pri ka\u017edej ot\u00e1\u010dke. Na skal\u00e1ch je d\u00f4le\u017eitej\u0161ia pru\u017enos\u0165 blokov a odoln\u00e1 bo\u010dnica ne\u017e samotn\u00e1 v\u00fd\u0161ka kociek. Pri v\u00fdbere sa nenechajte zmias\u0165 len agres\u00edvnym vzh\u013eadom, ale uva\u017eujte o tom, kde budete jazdi\u0165 najviac.<\/p>\n\n\n\n Tieto sk\u00fasenosti nie s\u00fa iba pre pretek\u00e1rov. Z p\u00fa\u0161t\u00ed a mrazov pri\u0161li modern\u00e9 zmesi so silikou<\/strong>, ktor\u00e9 lep\u0161ie dr\u017eia na mokre a v chlade. Zo sk\u00e1l a rally sa do SUV segmentu presunuli vystu\u017een\u00e9 bo\u010dnice <\/strong>a chr\u00e1ni\u010de r\u00e1fika<\/strong>. Z arktick\u00fdch testov je tu symbol 3PMSF<\/strong><\/a> (hora so snehovou vlo\u010dkou), teda potvrdenie, \u017ee pneu splnila \u0161tandardizovan\u00fd zimn\u00fd test. A univerz\u00e1lne pravidlo: spr\u00e1vny<\/strong> tlak<\/strong>. Merajte ho za studena, ria\u010fte sa \u0161t\u00edtkom vo dver\u00e1ch a r\u00e1tajte s t\u00fdm, \u017ee pokles teploty o ~10 \u00b0C uberie asi 0,1 bar.<\/p>\n\n\n\n Ak jazd\u00edte mimo asfaltu len ob\u010das, siahnite po AT (All-Terrain). S\u00fa to vyv\u00e1\u017een\u00e9 celoro\u010dn\u00e9 offroad pneu na lesn\u00e9 cesty aj do mesta. Ak potrebujete maximum do bahna, vyberajte spomedzi M\/T, r\u00e1tajte v\u0161ak s vy\u0161\u0161\u00edm hlukom a dlh\u0161ou brzdnou dr\u00e1hou na asfalte. O off-road pneu si m\u00f4\u017eete pre\u010d\u00edta\u0165 viac v tomto \u010dl\u00e1nku.<\/a><\/p>\n\n\n\n P\u00fa\u0161\u0165, \u013ead, skaly aj blato ukazuj\u00fa, \u017ee pneumatika je viac ne\u017e kus gumy. Je to jedin\u00e9, \u010do sp\u00e1ja auto s povrchom a v extr\u00e9moch rozhoduje o \u00faspechu aj bezpe\u010d\u00ed. Pr\u00e1ve v\u010faka t\u00fdmto \u201elaborat\u00f3ri\u00e1m\u201c s\u00fa dne\u0161n\u00e9 letn\u00e9<\/a>, zimn\u00e9<\/a> aj all-terrain pneumatiky istej\u0161ie a odolnej\u0161ie. <\/p>\n","protected":false},"excerpt":{"rendered":" Pneumatiky vyzeraj\u00fa na prv\u00fd poh\u013ead rovnako, no v extr\u00e9moch sa ukazuj\u00fa obrovsk\u00e9 rozdiely v ich technol\u00f3gii. In\u00e9 n\u00e1roky m\u00e1 p\u00fa\u0161\u0165 s rozp\u00e1len\u00fdm pieskom na Dakare, in\u00e9 \u013ead a pra\u0161an na arktick\u00fdch exped\u00edci\u00e1ch a celkom in\u00e9 ostr\u00e9 balvany \u010di lepiv\u00e9 blato. Pr\u00e1ve tam sa testuj\u00fa limity gumy, kostry aj dez\u00e9nu. V tomto \u010dl\u00e1nku si uk\u00e1\u017eeme, ako […]<\/p>\n","protected":false},"author":4,"featured_media":3237,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-3238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zaujimavosti"],"yoast_head":"\nArktick\u00e9 exped\u00edcie<\/h2>\n\n\n\n
![\"auto](\"https:\/\/najpneu.com\/blog\/wp-content\/uploads\/2025\/12\/expedicie-1024x576.jpg\")
<\/figure>\n\n\n\nSkaly a \u201erock crawling\u201c<\/h2>\n\n\n\n
Blato (M\/T)<\/h2>\n\n\n\n
![\"auto](\"https:\/\/najpneu.com\/blog\/wp-content\/uploads\/2025\/12\/blato-1024x576.jpg\")
<\/figure>\n\n\n\nH\u013abka dez\u00e9nu a h\u013abka hlavn\u00fdch dr\u00e1\u017eok<\/h2>\n\n\n\n
\u010co z extr\u00e9mov preniklo do be\u017en\u00fdch pneumat\u00edk<\/h2>\n\n\n\n
Va\u0161e vlastn\u00e9 ter\u00e9nne pneumatiky<\/h2>\n\n\n\n
Z\u00e1ver<\/h2>\n\n\n\n
Ak vyber\u00e1te obutie na svoje cesty, ve\u013ek\u00fd rozdiel spr\u00e1vny typ, rozmer, nosnos\u0165 a tlak. A ak chcete vybra\u0165 rozumne, na NAJpneu.com<\/a> si viete filtrova\u0165 pod\u013ea rozmeru aj sez\u00f3ny.<\/p>\n\n\n\n